Verified for patch 16.8.1

Void Staff

Damage from attacks and Abilities 30% Shred the target for 5 seconds. This effect does not stack.

Shred: Reduce Magic Resist

Recipe

Effects

AP: 35
AS: 15
MRShred: 30
MRShredDuration: 5
ManaRegen: 1

Void Staff enables

Shred On the Menu

Reduces the target's Magic Resist for a duration.