Perseus, Crazed Caster

Eminence - Whenever a player pays life for a spell or an ability, that player may return an instant or sorcery spell from their graveyard to their hand. Lifelink Whenever a player casts an instant or sorcery spell, that player may instead exile that spell before it resolves. If a player does this, that player may cast an instant or sorcery spell from their graveyard without paying its mana cost. Then put the exiled card in its owner’s graveyard.