The Masked Autarch

When The Masked Autarch enters the battlefield choose an instant or sorcery in an opponent's graveyard and exile it. You may cast it using mana
of any color and it gains Transcribe.
(Transcribe - "Afterwards, choose a creature and
exile this card. That creature gains '{x}, {t}: Copy
the exiled spell. {x} is that spell's converted mana
cost.'").