Oraan, Returned Conjurer

{b}{b}: Regenerate Oraan, Returned Conjurer.
You may exert Oraan, Returned Conjurer
as it attacks. When you do, you may copy the
next instant or sorcery spell you cast this turn,
and you may choose new targets for the copy.
(An exerted creature won't untap during your next
untap step.)
"Understanding your limits is the first step toward
surpassing them."