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Giant Oyster

Giant Oyster

{2}{U}{U}Creature — Oyster0/3

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.

Official rulings

  1. If the Oyster untaps during the draw step before its ability to add a -1/-1 counter resolves, the -1/-1 counter effect resolves and adds a -1/-1 counter after the -1/-1 counters are removed due to being untapped. (2004-10-04)
  2. Giant Oyster’s ability can be activated during your upkeep, and the creature will get a -1/-1 counter during the draw step that follows it. (2006-09-25)
  3. The activated ability can target only a tapped creature. (2006-09-25)
  4. Activating the ability creates a continuous effect that works only as long as Giant Oyster remains tapped, a repeating delayed triggered ability that’s in effect only as long as Giant Oyster remains tapped, and a delayed triggered ability that triggers when Giant Oyster untaps or when it leaves the battlefield. (2006-09-25)

Cards like this

Functionally similar cards by meaning — playable in Giant Oyster’s colours.