Callous Oppressor
Onslaught — Rare
Creature — Octopus
Sets Callous Oppressor has been printed in:

Onslaught — Rare
Creature — Octopus
Sets Callous Oppressor has been printed in:

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Creature — Human Cleric (1/1)
You may choose not to untap Preacher during your untap step.
: For as long as Preacher remains tapped, gain control of target creature of an opponent's choice they control.
Artifact
You may choose not to untap Helm of Possession during your untap step.
, , Sacrifice a creature: Gain control of target creature for as long as you control Helm of Possession and Helm of Possession remains tapped.
Creature — Djinn (2/3)
You may choose not to untap Old Man of the Sea during your untap step.
: Gain control of target creature with power less than or equal to Old Man of the Sea's power for as long as Old Man of the Sea remains tapped and that creature's power remains less than or equal to Old Man of the Sea's power.
Legendary Creature — Faerie (2/3)
You may choose not to untap Rubinia Soulsinger during your untap step.
: Gain control of target creature for as long as you control Rubinia and Rubinia remains tapped.
Creature — Merfolk (0/1)
When you control no Islands, sacrifice Seasinger.
You may choose not to untap Seasinger during your untap step.
: Gain control of target creature whose controller controls an Island for as long as you control Seasinger and Seasinger remains tapped.
Artifact
You may choose not to untap Vedalken Shackles during your untap step.
, : Gain control of target creature with power less than or equal to the number of Islands you control for as long as Vedalken Shackles remains tapped.
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