Primordial Reaper

Quantum Existence (Flip a coin on each of your upkeep steps. If it was heads, deal 2 damage to a target creature. If it was tails, place this creature in a stasis zone where it cannot attack or defend. If it was already in this stasis zone, return it to the battlefield.)
When Primordial Reaper returns to the battlefield or is summoned, return a creature from your graveyard to your battlefield.