Through the Void

You may search your library for a creature card
with converted mana cost {x} and put it on the battlefield. You may return a creature card with converted mana cost {x} from your graveyard to
the battlefield. You may return a creature card
you own in exile with converted mana cost {x} to the battlefield.

"... And through the Eternities did the Prophet travel,
witnessing the slumber of the Elder Ones..."
- Scriptures of Sokal, 14th chant.