Jerakal,Exuberant Plunderer

Flying, deathtouch
Whenever Jerakal attacks, exile the top card of
each player's library face down and put a plunder counter on it.
You may look at face down cards in exile with a plunder counter on them.
{u/r}: You may cast cards with a plunder counter on
them from exile this turn and you may spend
mana as though it were mana of any type to cast
those spells.