Gavel of the Righteous

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.

EDHREC rank #5200

USD reference: $1.89 (~₱118.73)