Kalente, Izzet Betrayer

Instant and Sorcery spells in your graveyard have
a flashback cost equal to their mana cost
{x}{u/r}: Discard an instant or sorcery spell with
CMC {x}: Search your library for an instant or
sorcery card with CMC {x}+1 or less, and cast it without paying it's mana cost. If it is cast this
way, exile it.