Decrepit Spire II

Heroes of this affinity with at least one of these types get the bonus.
Water+AncientorFableorMagitechorBlessed
6* Slayer
4* SlayerWavemother Mylio
PWR 7,417
Leader skill
300% Damage and HP for all Water Commander Heroes
Battle skill
Creates 3 Water Power Gem IIs. Creates 3 Power Gem IIs on each following turn for up to 4 turns, at a rate of 1 turn + 1 additional per 100 Skill Points.
Killer skill
Increases Damage by 200% while Noble enemies are present. * Only the Most Powerful Noble Killer effect on each hero will apply.
Biolume, Abyssal Oracle
PWR 7,859
Leader skill
300% Damage and HP for all Water Commander Heroes
Battle skill
Creates up to 6 Water Power Gem IVs, at a rate of 2 plus 1 additional per 75 Water Commander Skill Points.
Killer skill
Increases Damage by 200% while Noble enemies are present. * Only the Most Powerful Noble Killer effect on each hero will apply.
True Luminescents
PWR 9,987
Leader skill
300% Damage and HP for all Water Commander Heroes
Battle skill
Creates up to 9 Water Power Gem IVs, at a rate of 5 + 1 additional per 75 Water Commander Skill Points. Then creates 3 Power Gem IIs on each following turn for up to 4 turns, at a rate of 1 turn + 1 additional turn per 100 Skill Points * On Battle Skill Activation, creates 1 Water Ultimate Gem if at or above 300 Water Commander Skill Points and Noble Killer is active.
Passive skill
When this hero attacks, increases Water Commander Skill Points by 10.
Killer skill
Increases Water Commander Damage by 400% while Noble enemies are present. * Only the Most Powerful Noble Killer effect on each hero will apply.
Reforged Urhart Drillfist
PWR 7,417
Leader skill
300% Damage and HP for all Water Commander Heroes
Battle skill
Creates 4 Water Gems. Attacks for 50,000% ATK.
Passive skill
When this hero attacks, increases Water Commander Skill Points by 10.
Reforged Overclocked Urhart
PWR 7,417
Leader skill
300% Damage and HP for all Water Commander Heroes
Battle skill
Creates 2 Water Power Gem IIs. Heals for 1,000% Hero RCV and increses the number of turns until the target attacks by 2.
Witch Leckermaul
PWR 7,288
Leader skill
200% HP for all Trickster Heroes
Battle skill
Generates 1 Water Power Gem III.
Corisande, Wave Dancer
PWR 3,742
Leader skill
400% Damage and HP for all Water Fable Heroes in GvG attacks.
Battle skill
Increases Fable Heroes ATK by 55%, plus 3% per 20 Fable Intensity, rounded down, for 2 Turns.
Passive skill
Decreases damage taken by 10% for the first 3 turns.
Drakvepo the Seaborn
PWR 3,496
Leader skill
300% Damage and HP for all Water Fable Heroes
Battle skill
Increases Fable Intensity by 10. Creates 5 Water Gems both this and next turn. Increases RCV by 5% Per 5 Fable Intensity, rounded down, for 2 Turns.
Passive skill
Heals for 25% of RCV each time he attacks.
Ethereal Drake
PWR 3,742
Leader skill
300% Damage and HP for all Water Fable Heroes
Battle skill
Creates 1 Water Power Gem I, plus 1 additional for every 10 stacks of Fable Intensity, rounded down.
Bashma, Hydra Core
PWR 3,998
Leader skill
300% Damage and HP for all Water Fable Heroes
Battle skill
Creates 1 Water Power Gem I, plus 1 additional for every 8 stacks of Fable Intensity, rounded down.
Passive skill
Increases the drop rate of Water Gems for the first 3 turns.
Andaria, Forge Protector
PWR 3,496
Leader skill
400% Damage and HP for all Water Ancient Heroes in GvG attacks.
Battle skill
Creates 1 Water Gem, plus 1 additional per 30 Ancient Intensity, rounded down. If the target has 'Petrify', dispel it and create 5 Water Power Gems.
Passive skill
Increases Ancient Intensity by 5 per turn.
Saphiron of the Frozen Anvil
PWR 3,377
Leader skill
300% Damage and HP for all Water Ancient Heroes
Battle skill
Generates 10 Ancient Intensity and delay the enemy's turn by 1. Adds 'Petrify' for 2 turns.
Cerulean, Claw of the Forge
PWR 3,496
Leader skill
300% Damage and HP for all Water Ancient Heroes
Battle skill
Upgrades 2 Water Power Gems, plus 1 additional per 50 Ancient Intensity, rounded down, to a higher level. Max of 9 Water Power Gems Upgraded.
Azurid, Forge God
PWR 3,494
Leader skill
300% Damage and HP for all Water Ancient Heroes
Battle skill
Upgrades 2 Water Power Gems, plus 1 additional per 40 Ancient Intensity, rounded down, to a higher level. Max of 11 Water Power Gems Upgraded.
Erzo, Weeping King
PWR 5,257
Leader skill
200% HP for all Human Heroes
Battle skill
Matches after the first match have massively increased time to make gem matches for 2 turns. Does not stack.
Urru The Unliving
PWR 4,894
Leader skill
300% REC for all Ancient Heroes
Battle skill
Attacks for 1000% HP
Theseus
PWR 3,261
Leader skill
200% HP for all Technological Heroes
Battle skill
Turn up to 5 Earth Gems into Water Gems. If 10 Water Gems exist, then deal 1,000% ATK to a Fire enemy.
Icarus
PWR 3,130
Leader skill
300% Damage and HP for all Water Blessed Heroes
Battle skill
Greatly increase the drop rate of Water gems until your next turn.
Skybound
PWR 3,251
Leader skill
300% Damage and HP for all Water Blessed Heroes
Battle skill
Create 4 Water Gems. Destroy 4 Earth Gems.
Passive skill
If 8 or more Water Gems exist, increase self attack by 40% for 2 turns.
Shaella the Fearless
PWR 3,140
Leader skill
200% Damage for all Defender Heroes
Battle skill
Attack the target for 30 * your remaining HP% (maximum 3,000% ATK).
Passive skill
Create 1 Water gem every turn.
Urhart Drillfist
PWR 3,011
Leader skill
300% Damage and HP for all Water Magitech Heroes
Battle skill
Attack for 500% of ATK. If the target is Fire, attack again for 1,500% of ATK.
Overclocked Urhart
PWR 3,130
Leader skill
300% Damage and HP for all Water Magitech Heroes
Battle skill
Fully heals yourself. Increase the number of turns until the target attacks by 2.
Medusa
PWR 4,533
Leader skill
300% REC for all Ancient Heroes
Battle skill
Attacks an enemies for 800% of ATK.
Poseidon
PWR 2,901
Leader skill
300% REC for all Water Heroes
Battle skill
Moderately increases Water's effectiveness against Fire for 1 turn for all Heroes. Does not stack with itself.