Gavel of the Righteous

裁（さば）きの木（き）槌（づち）

Artifact — Equipment

At the beginning of combat on your turn, put a charge counter on this Equipment.Equipped creature gets +1/+1 for each counter on this Equipment.As long as this Equipment has four or more counters on it, equipped creature has double strike.Equip-Pay or remove a counter from this Equipment.