Giant Oyster

You may choose not to untap this creature during your untap step. {T}: For as long as this creature remains tapped, target tapped creature doesn't untap during its controller's untap step, and at the beginning of each of your draw steps, put a -1/-1 counter on that creature. When this creature leaves the battlefield or

becomes untapped, remove all -1/-1 counters from the creature.

From Magic: The Gathering.

Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms6o77f94cq7pb1hft1g2nt1.