Akua, the Diabolist

Protection from Avatars, Demons, and Devils.
When Akua, the Diabolist enters the battlefield,
exile the top five cards of each library.
{b}{b},{t}: Choose one—
• Until end of turn, you may cast target exiled
creature spell without paying its mana cost.
• Return target Demon from a graveyard to the battlefield under your control.