Feathered Gloom

Extra Skill

ES

Feathered Gloom

50% Atk, max HP (Dark) for all allies, 100% Dark elemental damage, spark damage may fill BB gauge & 300% BB Atk

Buff Values

Element Boost

ElementDark
ATK buff50%
HP buff50%
TargetAllies

Elemental Boost

Dark buff100%
TargetSelf

BB Fill on Spark

BC Fill1-2 BC
Chance100%
TargetSelf

Boosts BB Attack

BB ATK buff300%
SBB ATK buff300%
UBB ATK buff300%
TargetSelf

How to obtain

Winter & New Year 2020 Login Campaign - Day 32

Source: Brave Frontier Wiki