Gustha's Scepter

Gustha's Scepter

Artifact (CMC 0)
: Exile a card from your hand face down. You may look at it for as long as it remains exiled.
: Return a card you own exiled with Gustha's Scepter to your hand.
When you lose control of Gustha's Scepter, put all cards exiled with Gustha's Scepter into their owner's graveyard.