Thresh, the Chain Warden

When Thresh, the Chain Warden enters the battlefield, untap a creature.
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Sadistic and cunning, Thresh is an ambitious and restless spirit of the Shadow Isles. Once the custodian
of countless arcane secrets, he was undone by a power greater than life or death, and now sustains himself by tormenting and breaking others with slow,
excruciating inventiveness.