Verified for patch 16.8.1

Lich Bane

The holder's first attack after each Ability cast deals ? bonus magic damage.

Damage increases based on Stage.

Source

Artifact

Effects

AP: 55
AS: 10

Lich Bane enables

On Cast On the Menu

Effect fires the moment a unit casts its ability. Spellslinger / Jeweled-Gauntlet payoffs key off this.