Card Codex

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17 May 2024: Card library updated.

Giant Oyster

2UU · Creature — Oyster

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. 0/3

Similar cards

Color identity:
NameManaTypeText
Magnetic Mountain 1RREnchantment Blue creatures don't untap during their controllers' untap steps. At the beginning of each player's upkeep, that player may choose any number of tapped blue creatures they control and pay {4} for each creature chosen this way. If the player does, untap those creatures.
Thelon's Curse GGEnchantment Blue creatures don't untap during their controllers' untap steps. At the beginning of each player's upkeep, that player may choose any number of tapped blue creatures they control and pay {U} for each creature chosen this way. If the player does, untap those creatures.
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Rubble 2RSorcery Aftermath (Cast this spell only from your graveyard. Then exile it.) Up to three target lands don't untap during their controller's next untap step.
Vertigo Spawn 1UCreature — Illusion Defender Whenever Vertigo Spawn blocks a creature, tap that creature. That creature doesn't untap during its controller's next untap step. 0/3
Exhaustion 2USorcery Creatures and lands target opponent controls don't untap during their next untap step.
T-45 Power Armor 2Artifact — Equipment When T-45 Power Armor enters the battlefield, you get {E}{E} (two energy counters). Equipped creature gets +3/+3 and doesn't untap during its controller's untap step. At the beginning of your upkeep, you may pay {E}. If you do, untap equipped creature, then put your choice of a menace, trample, or lifelink counter on it. Equip {3}
Merieke Ri Berit WUBLegendary Creature — Human Merieke Ri Berit doesn't untap during your untap step. {T}: Gain control of target creature for as long as you control Merieke Ri Berit. When Merieke Ri Berit leaves the battlefield or becomes untapped, destroy that creature. It can't be regenerated. 1/1
Mana Vapors 1USorcery Lands target player controls don't untap during their next untap step.
Stoic Angel 1GWUCreature — Angel Flying, vigilance Players can't untap more than one creature during their untap steps. 3/4
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