Hammer Jammer

As this creature enters, roll a six-sided die. This creature enters with a number of +1/+1 counters on it equal to the result. Whenever you roll a die, remove all +1/+1 counters from this creature, then put a number of +1/+1 counters on it equal to the result.

From Magic: The Gathering.

Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms6oot3ei6xdpb1ho5vgqaz4.