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5 days ago Giant Oyster - (Gatherer) (Scryfall) (EDHREC)
{2}{U}{U} Creature — Oyster 0/3 You may choose not to untap Giant Oyster during your untap step. {T}: For as long as Giant Oyster 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 Giant Oyster leaves the battlefield or becomes untapped, remove all -1/-1 counters from the creature.
A single card is using it [[Giant Oyster]]. I don't see a reason for the method. It was actually used by a bugged version of Narci, Fabled Singer, cleaned in 5016a57397400f2c16a82401216d4e999281d280.