Etali, Bringer of Storms

Whenever Etali, Bringer of Storms attacks, exile
X cards from the top of your library, where X is
the number of attacking creatures. For as long as
they remain exiled, you may play them
Whenever you play a card from exile, you may
draw a card
Nobody expected Etali to awaken again, but all
those fighting for Ixalan were grateful