Voidfang Shard
On hit, target must succeed on a DC 20 Constitution saving throw or become phased: Disadvantage on all attack rolls. Takes 4d10 force damage at the start of each turn for up to 3 rounds (repeat save at end of turn).
Complete rules
Void Phase On hit, target must succeed on a DC 20 Constitution saving throw or become phased: • Disadvantage on all attack rolls. • Takes 4d10 force damage at the start of each turn for up to 3 rounds (repeat save at end of turn). This weapon ignores resistance and immunity to force and psychic damage. Tear the Veil (1/long rest) As an action, create a 10-foot radius void portal for 1 round. Creatures in the area at the start of their turn must make a DC 20 Dexterity saving throw or take 8d10 force damage and be restrained until the portal closes.