Meyurevant, Dream Eater

Rebirth—When Meyurevant, Dream Eater
enters the battlefield, target a creature an
opponent controls. For as long as Meyurevant,
Dream Eater remains on the battlefield, gain
control of that creature. It loses all abilities
and it can't attack or block.
At the beginning of your upkeep, put a Revival counter on the stolen creature. If it has 3 or more Revival counters, sacrifice it and transform Meyurevant.