Zruamek, Void Shaper

Devoid (This card has no color.)
Annihilator 2
When Zruamek, Void Shaper enters the battlefield, exile your hand.
At the beginning of your upkeep, return a card
exiled with Zruamek, Void Shaper to your hand.
If you can't, return Zruamek, Void Shaper to
your hand.