Leira, Goddess of Deception

Indestructible
If you don't have a Warlock, Wizard, and a
Sorcerer in your graveyard Leira, Goddess of Deception isn't a creature.
All creature cards that are on your side of the battlefield are exiled when they are destroyed.
You may cast creature cards from exile by paying
the creatures converted mana cost.
This Ability can only be used when Leira,
Goddess of Deception is a creature.