Edward, Fullmetal Alchemist

Persist, Haste
Each permanent gains " Sacrifice this card, then search your library or your graveyard for a card with CMC equal to this card's CMC that share's this card's type and put it onto the battlefield."
Activated abilities cost {3} less to activate, and they can be activated any time you could cast an instant.
"In order to obtain, something of equal value must be lost. This is the law of equivalent exchange." -Edward Elric, Fullmetal Alchemist