The Lost City of Atlantis

{x}{u}{t}: Target legendary or heroic creature gains Suspend X+1, except it is not recast, it is returned to play when unsuspended. Reveal the top cards of your library for an enchantment card with converted casting cost X and put it into play. If the card is an aura, attach it to the targeted creature. Shuffle your library.
Now in this island of Atlantis there was a great and wonderful empire which had rule over the whole island...and the island of Atlantis in like manner disappeared in the depths o