Tretch Craventail skill tree & build planner
SkavenLegendary lordUnit stats
Skaven47 skills, up to rank 50. Tap a skill for a point; long-press, right-click or − takes it back. The mount, items and stat card are under the tree.
Rank 1 / 50Tap a skill below to take a point
Character
- Life is CheapUnlocks at rank 5 · 2 levelsLevel 1Armour: +5 for Skavenslaves units (Lord's army)Upkeep: -33% for Skavenslaves units (Lord's army)Casualty replenishment rate: +4% (Lord's army)Level 2Armour: +10 for Skavenslaves units (Lord's army)Upkeep: -50% for Skavenslaves units (Lord's army)Casualty replenishment rate: +8% (Lord's army)It should be no surprise that a race without a shred of honour or decency between them have even less regard for each other's lives.
- SneakyUnlocks at rank 8Missile resistance: 10%Furtive, scheming, sly, cunning, underhand, devious, conniving, double-dealing, and sneaky - valuable traits if you wish to stay alive!
- TricksyUnlocks at rank 8Spell resistance: 10%All Skaven are unprincipled and untrustworthy by their foul natures. However, this is rarely a disadvantage in the face of the enemy.
- Warpstone WeaponUnlocks at rank 13Armour-piercing weapon damage: +12Enables magical attacksIf you've got the Warptokens and the contacts, you can get all manner of fine, murderous armaments crafted to fit claw or tail perfectly.
- Army of RenownUnlocks at rank 10 · 3 levelsLevel 1 · free at rank 10Regiments of Renown army capacity: +2 (own army)Level 2 · free at rank 20Regiments of Renown army capacity: +4 (own army)Level 3 · free at rank 30Regiments of Renown army capacity: +6 (own army)If their renown does them justice, they will be fit to serve one whose fame they will never outstrip.
- MentorUnlocks at rank 30 · 3 levelsLevel 1Character experience gain: +20% (Heroes in Lord's army)Character will share +15% of experience earned between all other active LordsLevel 2 · rank 40Character experience gain: +35% (Heroes in Lord's army)Character will share +30% of experience earned between all other active LordsLevel 3 · rank 50Character experience gain: +50% (Heroes in Lord's army)Character will share +50% of experience earned between all other active LordsHaving learned much in their long years of service, this character now turns their attention to training others.
Armour: +5 for Skavenslaves units (Lord's army)
Upkeep: -33% for Skavenslaves units (Lord's army)
Casualty replenishment rate: +4% (Lord's army)
Missile resistance: 10%
Spell resistance: 10%
Armour-piercing weapon damage: +12
Enables magical attacks
Regiments of Renown army capacity: +2 (own army)
Character experience gain: +20% (Heroes in Lord's army)- Tretch's RaidersUnlocks at rank 10Passive ability: "Tretch's Raiders"Charge bonus: +10 for Stormvermin units (Lord's army)Income from raiding: +30% (Lord's army)A master of exploiting others' weaknesses, Tretch and his band are never where you expect them and always where they can do most damage.
- Master of GuileUnlocks at rank 10 · 2 levelsLevel 1Ambush success chance: +10% (Lord's army)Ambush defence chance: +10% (Lord's army)Evasion chance when using Tunnelling: +10%Level 2Ambush success chance: +20% (Lord's army)Ambush defence chance: +20% (Lord's army)Evasion chance when using Tunnelling: +20%Requires: Tretch's RaidersTretch's sneaky, ultra-duplicitous tactics are dirty, even by Skaven low standards!
- Vanished!Unlocks at rank 10 · 2 levelsLevel 1Missile resistance: 10% for Clanrats and Stormvermin units (Lord's army)Speed: +10% for Clanrats and Stormvermin units (Lord's army)Replenishes 10% campaign movement range after winning a battleLevel 2Missile resistance: 20% for Clanrats and Stormvermin units (Lord's army)Speed: +20% for Clanrats and Stormvermin units (Lord's army)Replenishes 15% campaign movement range after winning a battleRequires: Tretch's Raiders"I turned around and they'd run-scurried off! Covering that distance in no time at all? It can't be natural, yes-yes!"
- "Stay Here, I'll Get Help!"Unlocks at rank 10 · 2 levelsLevel 1Cooldown: -33% to "Stay Here, I'll Get Help!"Ability number of uses: +2 for "Stay Here, I'll Get Help!"Level 2Cooldown: -50% to "Stay Here, I'll Get Help!"Ability number of uses: +3 for "Stay Here, I'll Get Help!"Requires: Tretch's RaidersIt's not running away. It's knowing when and where to be to secure the best advantage.
- Coming BackUnlocks at rank 10Passive ability: "Regeneration"Wound recovery time: -1 turnsCasualty replenishment rate: +6% (Lord's army)Requires: 2 skill points across Master of Guile, Vanished!, "Stay Here, I'll Get Help!""We'll be back. We're coming back in here."
Passive ability: "Tretch's Raiders"
Charge bonus: +10 for Stormvermin units (Lord's army)
Income from raiding: +30% (Lord's army)
Ambush success chance: +10% (Lord's army)
Evasion chance when using Tunnelling: +10%
Speed: +10% for Clanrats and Stormvermin units (Lord's army)
Replenishes 10% campaign movement range after winning a battle
Cooldown: -33% to "Stay Here, I'll Get Help!"
Wound recovery time: -1 turns- Tail WeaponMelee attack: +3Weapon strength: +4%Whether by attachment or mutation, something nasty and spiky on your tail has got to bring no little advantage in battle.
- Ruin & Decay2 levelsLevel 1Weapon strength: +10% when fighting against DwarfsWeapon strength: +10% when fighting against LizardmenWeapon strength: +2%Level 2Weapon strength: +10% when fighting against High Elves, Lizardmen, Dwarfs and menWeapon strength: +5%Requires: Tail WeaponAs you might expect, the forces of order are repelled by the Skaven and their myriad disgusting, disease-ridden ways.
- Thick-Skinned2 levelsLevel 1Armour: +7Level 2Armour: +15Requires: Tail WeaponCreatures with tough hides or some kind of natural armour are tough nuts to crack - even a powerful attack may fall foul of their thick-skin.
- Blade Master2 levelsLevel 1Melee attack: +6Level 2Melee attack: +12Requires: Tail WeaponThis warrior is one with their blade; it is an extension of their will, making them a worthy foe in combat.
- Indomitable2 levelsLevel 1Leadership: +6Level 2Leadership: +12Requires: Tail WeaponThe iron will and indomitable presence of this leader ensures their followers remain steadfast when facing peril.
- Verminous ValourUnlocks at rank 4Ability: "Verminous Valour"Requires: 4 skill points across Ruin & Decay, Thick-Skinned, Blade Master, Indomitable
- Wound-Maker2 levelsLevel 1Weapon strength: +10%Level 2Weapon strength: +20%Requires: Verminous ValourSuch is their power and ferocity, a wound-maker will ravage the foe, cutting and pulverising until there is only one exit - death.
- Scarred Veteran2 levelsLevel 1Hit points: +7%Level 2Hit points: +15%Requires: Verminous ValourThe scars on this storied warrior reveal a veteran of many battles, a being not easy to kill and one worthy of respect and fear.
- Blade Shield2 levelsLevel 1Melee defence: +6Level 2Melee defence: +12Requires: Verminous ValourA blade that sings in defence will not let its wielder be penetrated.
- Expeditious Endeavour2 levelsLevel 1Speed: +7%Level 2Speed: +15%Requires: Verminous ValourWhat the enemy cannot see, it cannot hit. What the enemy cannot see, it cannot survive.
- Trophy HeadsAbility: "Trophy Heads"Requires: 4 skill points across Wound-Maker, Scarred Veteran, Blade Shield, Expeditious Endeavour
Melee attack: +3
Weapon strength: +4%
Armour: +7
Leadership: +6
Hit points: +7%
Melee defence: +6
Speed: +7%Battle
- Inspiring PresenceUnit experience gain per turn: +75 (Lord's army)Character's aura leadership effect: +5There are Lords that radiate power, confidence and fear, inspiring their followers to great or terrible acts.
- Pack Leader3 levelsLevel 1Melee attack: +4 for Clanrats units (Lord's army)Level 2Leadership: +3 for Clanrats units (Lord's army)Melee attack: +4 for Clanrats units (Lord's army)Level 3Leadership: +5 for Clanrats units (Lord's army)Melee attack: +6 for Clanrats units (Lord's army)Requires: Inspiring PresenceTo rise above the rank and file, to claw one's way above the mire and the filth, takes a certain, superior breed of Skaven.
- Infiltrator3 levelsLevel 1Reload time reduction: +3% for Night Runners and Gutter Runners units (Lord's army)Level 2Reload time reduction: +6% for Night Runners and Gutter Runners units (Lord's army)Speed: +7% for Night Runners and Gutter Runners units (Lord's army)Level 3Reload time reduction: +9% for Night Runners and Gutter Runners units (Lord's army)Speed: +10% for Night Runners and Gutter Runners units (Lord's army)Requires: Inspiring PresenceHaving to hide, for an extended period, in a dark, dank recess, in order to entrap and kill your target encourages lateral thinking.
- Blastmaster3 levelsLevel 1Ammunition: +8% for Warpfire Thrower, Warplock Jezzails, Ratling Gun, Poisoned Wind Globadiers, Poisoned Wind Mortars, Death Globe Bombardiers and Ranged Stormfiend units (Lord's army)Level 2Ammunition: +12% for Warpfire Thrower, Warplock Jezzails, Ratling Gun, Poisoned Wind Globadiers, Poisoned Wind Mortars, Death Globe Bombardiers and Ranged Stormfiend units (Lord's army)Reload time reduction: +4% for Warpfire Thrower, Warplock Jezzails, Ratling Gun, Poisoned Wind Globadiers, Poisoned Wind Mortars, Death Globe Bombardiers and Ranged Stormfiend units (Lord's army)Level 3Ammunition: +20% for Warpfire Thrower, Warplock Jezzails, Ratling Gun, Poisoned Wind Globadiers, Poisoned Wind Mortars, Death Globe Bombardiers and Ranged Stormfiend units (Lord's army)Reload time reduction: +8% for Warpfire Thrower, Warplock Jezzails, Ratling Gun, Poisoned Wind Globadiers, Poisoned Wind Mortars, Death Globe Bombardiers and Ranged Stormfiend units (Lord's army)Requires: Inspiring PresenceKnowing exactly where and when to strike is essential when fielding fiendish, potentially battle-winning plague-weapons.
- Respected & Feared3 levelsLevel 1Weapon strength: +6% for Stormvermin, Death Runners, Plague Monks and Eshin Triads units (Lord's army)Armour: +6 for Cauldron of a Thousand Poxes units (Lord's army)Level 2Melee attack: +4 for Stormvermin, Death Runners, Plague Monks and Eshin Triads units (Lord's army)Weapon strength: +6% for Stormvermin, Death Runners, Plague Monks and Eshin Triads units (Lord's army)Armour: +9 for Cauldron of a Thousand Poxes units (Lord's army)Level 3Melee attack: +6 for Stormvermin, Death Runners, Plague Monks and Eshin Triads units (Lord's army)Weapon strength: +9% for Stormvermin, Death Runners, Plague Monks and Eshin Triads units (Lord's army)Armour: +12 for Cauldron of a Thousand Poxes units (Lord's army)Requires: Inspiring PresenceIs it better to be respected or feared? What sort of question is that... why, both of course!
- Moulder Knowledge3 levelsLevel 1Charge bonus: +6 for Wolf Rats, Rat Ogres, Mutant Rat Ogre, Brood Horror, Melee Stormfiend and Hell Pit Abomination units (Lord's army)Level 2Charge bonus: +9 for Wolf Rats, Rat Ogres, Mutant Rat Ogre, Brood Horror, Melee Stormfiend and Hell Pit Abomination units (Lord's army)Speed: +7% for Wolf Rats, Rat Ogres, Mutant Rat Ogre, Brood Horror, Melee Stormfiend and Hell Pit Abomination units (Lord's army)Level 3Charge bonus: +12 for Wolf Rats, Rat Ogres, Mutant Rat Ogre, Brood Horror, Melee Stormfiend and Hell Pit Abomination units (Lord's army)Speed: +10% for Wolf Rats, Rat Ogres, Mutant Rat Ogre, Brood Horror, Melee Stormfiend and Hell Pit Abomination units (Lord's army)Requires: Inspiring PresenceThis one has seen the hideous deformities created by Clan Moulder firsthand and now fancies himself a dab hand with a needle and thread…
- Engineering Skill3 levelsLevel 1Charge bonus: +6% for Doomwheel and Doom-Flayers units (Lord's army)Speed: +3% for Warp-Grinders units (Lord's army)Reload time reduction: +3% for Doomwheel, Plagueclaw Catapult, Warp Lightning Cannon and Warp-Doom Magma-Cannon units (Lord's army)Level 2Armour: +6 for Doomwheel, Doom-Flayers and Warp-Grinders units (Lord's army)Charge bonus: +9% for Doomwheel and Doom-Flayers units (Lord's army)Speed: +7% for Warp-Grinders units (Lord's army)Ammunition: +12% for Doomwheel, Plagueclaw Catapult, Warp Lightning Cannon and Warp-Doom Magma-Cannon units (Lord's army)Reload time reduction: +6% for Doomwheel, Plagueclaw Catapult, Warp Lightning Cannon and Warp-Doom Magma-Cannon units (Lord's army)Level 3Armour: +12 for Doomwheel, Doom-Flayers and Warp-Grinders units (Lord's army)Charge bonus: +12% for Doomwheel and Doom-Flayers units (Lord's army)Speed: +12% for Warp-Grinders units (Lord's army)Ammunition: +20% for Doomwheel, Plagueclaw Catapult, Warp Lightning Cannon and Warp-Doom Magma-Cannon units (Lord's army)Reload time reduction: +9% for Doomwheel, Plagueclaw Catapult, Warp Lightning Cannon and Warp-Doom Magma-Cannon units (Lord's army)Requires: Inspiring PresenceThis one's intimate knowledge of the inner workings of Skaven machinery enables him to improve their efficiency on the battlefield.
- Rally!Ability: "Rally!"Requires: 6 skill points across Pack Leader, Infiltrator, Blastmaster, Respected & Feared, Moulder Knowledge, Engineering Skill
- Whip-SmartLeadership: +5 for Skavenslaves, Clanrats, Stormvermin and Pusbag units (Rank 7 and above) (Lord's army)Melee attack: +5 for Skavenslaves, Clanrats, Stormvermin and Pusbag units (Rank 7 and above) (Lord's army)Missile resistance: 15% for Skavenslaves, Clanrats, Stormvermin and Pusbag units (Rank 7 and above) (Lord's army)Requires: Rally!The wise commander considers the lash a dear friend - so much more than a motivational tool to encourage correctness in spirit and behaviour.
- Gutter-WiseLeadership: +5 for Gutter Runners, Night Runners, Death Runners and Eshin Triads units (Rank 7 and above) (Lord's army)Range: +15% for Gutter Runners and Night Runners units (Rank 7 and above) (Lord's army)Speed: +20% for Death Runners and Eshin Triads units (Rank 7 and above) (Lord's army)Requires: Rally!Early years spent in the gutter both prepares the ambitious rat for power and schools him in the dirtier, more cut-throat ways of war.
- Warp-SmartBonus vs Infantry: +5 for Doomwheel, Doom-Flayers and Warp-Grinders units (Rank 7 and above) (Lord's army)Leadership: +5 for Weapon Team, Doom-Flayers, Doomwheel, Plagueclaw Catapult, Warp Lightning Cannon, Ranged Stormfiend and Warp-Doom Magma-Cannon units (Rank 7 and above) (Lord's army)Spell resistance: 15% for Weapon Team, Doom-Flayer, Doomwheel, Plagueclaw Catapult, Warp Lightning Cannon, Ranged Stormfiend and Warp-Doom Magma-Cannon units (Rank 7 and above) (Lord's army)Missile strength: +12% for Weapon Team, Doomwheel, Plagueclaw Catapult, Warp Lightning Cannon, Ranged Stormfiend and Warp-Doom Magma-Cannon units (Rank 7 and above) (Lord's army)Requires: Rally!This one knows just what to say to 'encourage' the very best work from his underling Warp-smiths and technicians.
- Mutagenic ElixirsArmour: +10 for Wolf Rats, Rat Ogres, Mutant Rat Ogre, Brood Horror, Hell Pit Abomination, Plague Monks, Melee Stormfiend, Pusbag and Cauldron of a Thousand Poxes units (Rank 7 and above) (Lord's army)Leadership: +5 for Wolf Rats, Rat Ogres, Mutant Rat Ogre, Brood Horror, Hell Pit Abomination, Plague Monks, Melee Stormfiend, Pusbag and Cauldron of a Thousand Poxes units (Rank 7 and above) (Lord's army)Physical resistance: 10% for Wolf Rats, Rat Ogres, Mutant Rat Ogre, Brood Horror, Hell Pit Abomination, Plague Monks, Melee Stormfiend, Pusbag and Cauldron of a Thousand Poxes units (Rank 7 and above) (Lord's army)Requires: Rally!Potions infused with Warpstone transmogrify the not-always-willing testbed subjects; those who survive the process emerge stronger and better in every way.
- Stand or Die!Replaces: "Rally!"Ability: "Stand or Die!"Requires: a point in any of Whip-Smart, Gutter-Wise, Warp-Smart, Mutagenic Elixirs
Melee attack: +4 for Clanrats units (Lord's army)
Leadership: +3 for Clanrats units (Lord's army)
Reload time reduction: +3% for Night Runners and Gutter Runners units (Lord's army)
Ammunition: +8% for Warpfire Thrower, Warplock Jezzails, Ratling Gun, Poisoned Wind Globadiers, Poisoned Wind Mortars, Death Globe Bombardiers and Ranged Stormfiend units (Lord's army)
Weapon strength: +6% for Stormvermin, Death Runners, Plague Monks and Eshin Triads units (Lord's army)
Range: +15% for Gutter Runners and Night Runners units (Rank 7 and above) (Lord's army)
Bonus vs Infantry: +5 for Doomwheel, Doom-Flayers and Warp-Grinders units (Rank 7 and above) (Lord's army)
Missile strength: +12% for Weapon Team, Doomwheel, Plagueclaw Catapult, Warp Lightning Cannon, Ranged Stormfiend and Warp-Doom Magma-Cannon units (Rank 7 and above) (Lord's army)
Physical resistance: 10% for Wolf Rats, Rat Ogres, Mutant Rat Ogre, Brood Horror, Hell Pit Abomination, Plague Monks, Melee Stormfiend, Pusbag and Cauldron of a Thousand Poxes units (Rank 7 and above) (Lord's army)Campaign
- Route MarcherCampaign movement range: +5%Those who know the land and its secrets will travel faster and further than the foes who don't.
- Looter3 levelsLevel 1Income from looting settlements: +3% (Lord's army)Level 2Income from looting settlements: +8% (Lord's army)Level 3Income from looting settlements: +15% (Lord's army)Requires: Route MarcherThose that excel as looters make sure that every coin or gold tooth is found and added to the plunder. Woe betide the warrior that misses even a single copper token!
- Ancient Cunning3 levelsLevel 1Ambush success chance: +6% (Lord's army)Level 2Ambush success chance: +16% (Lord's army)Level 3Ambush success chance: +30% (Lord's army)Requires: Route MarcherSuch long-lived creatures develop a level of guile that mortals cannot match.
- Bonded Service3 levelsLevel 1Recruitment cost: -5% (Lord's army)Level 2Recruitment cost: -10% (Lord's army)Level 3Recruitment cost: -15% (Lord's army)Requires: Route MarcherThe Lords rule, the peasants toil. Nothing has changed in over a thousand years.
- Dictatorial3 levelsLevel 1Corruption: -1 (when in own province)Level 2Corruption: -2 (when in own province)Level 3Corruption: -3 (when in own province)Requires: Route MarcherNot with: CorruptiveKeeping on top of things with an iron fist prevents Skavendom from becoming too much of a degenerate mess.
- Corruptive3 levelsLevel 1Skaven corruption: +1 (local enemy province)Level 2Skaven corruption: +2 (local enemy province)Level 3Skaven corruption: +3 (local enemy province)Requires: Route MarcherNot with: DictatorialNaturally, rats get in everywhere – even the tiniest opening presents little obstacle – spreading their disease and corruption everywhere they can.
- DraftmasterRecruit rank: +1 for all units (Lord's army)Local recruitment capacity: +1 (local province)Requires: 4 skill points across Looter, Ancient Cunning, Bonded Service, Dictatorial, CorruptiveSomeone has to ensure the numbers and quality of recruits remain high.
- Lightning Strike3 levelsLevel 1Enemy battle reinforcement time: +25%Battle reinforcement time: -10%Reinforcements supporting this army can have their arrival point adjusted by +250 metres without incurring any time penaltyLevel 2Enemy battle reinforcement time: +50%Battle reinforcement time: -20%Reinforcements supporting this army can have their arrival point adjusted by +600 metres without incurring any time penaltyLevel 3Enemy battle reinforcement time: +50%Battle reinforcement time: -30%Reinforcements supporting this army can have their arrival point adjusted by +1000 metres without incurring any time penaltyEnables lightning strike battles when reinforcements are presentRequires: Draftmaster"The time to strike is now!"
- Quartermaster3 levelsLevel 1Upkeep: -3% (Lord's army)Level 2Upkeep: -6% (Lord's army)Level 3Upkeep: -10% (Lord's army)Requires: DraftmasterA good quartermaster can ration equipment and foodstuffs efficiently, making supplies last longer.
- Wary3 levelsLevel 1Enemy Hero action success chance: -3%Ambush defence chance: +8% (Lord's army)Level 2Enemy Hero action success chance: -8%Ambush defence chance: +16% (Lord's army)Level 3Enemy Hero action success chance: -15%Ambush defence chance: +30% (Lord's army)Requires: DraftmasterThis warrior has been ambushed previously and got themselves and many of their compatriots away safely. Such things make one naturally suspicious.
- "Miiine All Miiine!"3 levelsLevel 1Post battle chance of stealing a magic item: +5%Income from post-battle loot: +10%Level 2Post battle chance of stealing a magic item: +10%Income from post-battle loot: +20%Level 3Post battle chance of stealing a magic item: +15%Income from post-battle loot: +30%Requires: DraftmasterWhen making corpses of your foes, leave nothing of value for their kin to recover.
- Renowned & FearedEnemy Hero action success chance: -10%Hero self-defence: +25% chance of wounding aggressorsCampaign movement range: +5%Recruit rank: +1 for all units (Lord's army)Upkeep: -8% (Lord's army)Requires: 4 skill points across Lightning Strike, Quartermaster, Wary, "Miiine All Miiine!"This Lord's many deeds - both on and off the battlefield - have brought them renown among their allies and made them feared by their enemies.
Recruitment cost: -5% (Lord's army)
Corruption: -1 (when in own province)
Skaven corruption: +1 (local enemy province)
Local recruitment capacity: +1 (local province)
Enemy battle reinforcement time: +25%
Enables lightning strike battles when reinforcements are present
Enemy Hero action success chance: -3%
Post battle chance of stealing a magic item: +5%Items
- Weapon
- Armour
- Talisman
- Enchanted item
- Follower or banner0/2
Items this character can carry: its race's (or any race's), its kind of character, and the ones made for it; an item only some factions get is left out for a legendary lord of another faction and marked “… only” for everyone else. The arcane item slot is for spellcasters (Dwarf characters carry three Character Runes there); followers and banners share two ancillary slots.
Stats of this build
Tretch Craventail · base + skills + items; no techs, buffs, campaign or battle-context effects (vs a race, at sea…).
| Stat | Base | Build |
|---|---|---|
| Health | 4,288 | 4,288 |
| Armour | 90 | 90 |
| Leadership | 65 | 65 |
| Speed | 42 | 42 |
| Melee attack | 40 | 40 |
| Melee defence | 70 | 70 |
| Weapon strength | 400 | 400 |
| … armour-piercing | 120 | 120 |
| Charge bonus | 40 | 40 |
| Bonus vs large | 25 | 25 |
| Ward save % | 0 | 0 |
| Physical resistance % | 0 | 0 |
| Missile resistance % | 15 | 15 |
| Spell resistance % | 0 | 0 |
| Fire resistance % | 0 | 0 |
| Magical attacks | No | No |
| Flaming attacks | No | No |
All effects of this build
No skills taken yet.
Skills and items; like lines are added up, and a skill counts at the highest level taken (each level lists its totals). Army of Renown fills itself in at its ranks.
Source: character_skill_node_sets, character_skill_nodes, character_skill_node_links (REQUIRED and SUBSET_REQUIRED), character_skill_level_details, character_skills_to_level_reached_criterias, character_skill_nodes_skill_locks and character_experience_skill_tiers, patch 9.0.4, via the WH3-Dump export. The general tree only: faction and campaign variants of a tree are not included. A skill after a group of skills (SUBSET_REQUIRED) opens once the skill points character_skill_nodes.required_num_parents asks for are spent in that group, in any mix — the game's “Available after spending N skill points in the previous group”; each REQUIRED skill needs a point.