Giant Oyster
Homelands — Uncommon
Creature — Oyster
Sets Giant Oyster has been printed in:

Homelands — Uncommon
Creature — Oyster
Sets Giant Oyster has been printed in:

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Legendary Artifact
You may choose not to untap The Pandorica during your untap step.
, : Untap another target nonland permanent, then it phases out. It can't phase in for as long as The Pandorica remains tapped. When The Pandorica becomes untapped or leaves the battlefield, that permanent phases in. Activate only as a sorcery.
Artifact
You may choose not to untap Tawnos's Coffin during your untap step.
, : Exile target creature and all Auras attached to it. Note the number and kind of counters that were on that creature. When Tawnos's Coffin leaves the battlefield or becomes untapped, return that exiled card to the battlefield under its owner's control tapped with the noted number and kind of counters on it. If you do, return the other exiled cards to the battlefield under their owner's control attached to that permanent.
Artifact
You may choose not to untap Immovable Rod during your untap step.
Whenever Immovable Rod becomes untapped, venture into the dungeon.
, : For as long as Immovable Rod remains tapped, another target permanent loses all abilities and can't attack or block.
Creature — Thalakos Wizard (1/1)
Shadow (This creature can block or be blocked by only creatures with shadow.)
You may choose not to untap Thalakos Dreamsower during your untap step.
Whenever Thalakos Dreamsower deals damage to an opponent, tap target creature. That creature doesn't untap during its controller's untap step for as long as Thalakos Dreamsower remains tapped.
Artifact
Echo (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)
You may choose not to untap Thran Weaponry during your untap step.
, : All creatures get +2/+2 for as long as Thran Weaponry remains tapped.
Creature — Plant Wall (1/4)
Defender; reach (This creature can block creatures with flying.)
You may choose not to untap Whip Vine during your untap step.
: Tap target creature with flying blocked by Whip Vine. That creature doesn't untap during its controller's untap step for as long as Whip Vine remains tapped.
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