Flail of Certain Death

Explorer's Guide to Wildemount p. 270 (Third Party),

Type
Melee Weapon
Magic
Yes
Rarity
rare
Weight
2
Damage
1d8
Damage Type
bludgeoning
Properties
melee

Description

When you damage a creature with an attack using this magic weapon, the target can't regain hit points until the start of your next turn.

Proficiency: martial, flail Source: Explorer's Guide to Wildemount p. 270 (Third Party), Player's Handbook (2014) p. 149