Chronomancer of the Lost Ages

When Chronomancer of the Lost Ages enters, you may return an instant or sorcery card from your graveyard to your hand.
{2}{u}: Exile Chronomancer of the Lost Ages, then return it to the battlefield at the beginning of the next end step. Activate only as a sorcery.

"Time's endless weave can be unwound and rewoven
at will... if you dare to touch it."