Master Thief

When Master Thief enters the battlefield Heist.
Whenever you would Heist, instead Heist twice.
If two or more spells with the same name were
exiled by Heist, you may cast all of those spells
simultaneously for the converted mana cost of
one of those spells.
{b}{r} Heist.
"He doesn't steal from the bank, he steals the bank
it's self."
-Ravnica Tribune
Heist allows you to Exile the top card of your opponents library; and you may play that card at any time for it's converted ma