The Database has not been updated for the non-MMO version of the game, and likely won't be.
Echoes Common
0
Gloom Horror Echo
Echo Type: Rush
Triggered by:
Landing a jump heavy slam attack
Effect:
Marks all nearby enemies to be sacrificed, killing marked enemies instantly heals 5% of Max Hp and buffs the wayfinders damage for 2% for 20 seconds, up to 5 stacks 60 second cooldown.