Catnap Haunt

Flying, ward-Discard a card.

Whenever Catnap Haunt deals damage to an opponent, that player exiles a random card from its hand. You may look at and play that card for as
long as it remains exiled, and you may spend mana
as though it were mana of any type to cast that spell.
Discard a card: exile Catnap Haunt, then return
it to the battlefield under its owner's control.