Astalos, Charged Fury

Flying, Haste

Whenever Astalos, Charged Fury attacks, put a charge counter on it. Whenever it deals combat damage, you may cast an instant or sorcery with
mana value equal to or less than the number of charge counters on Astalos, Charged Fury from
your graveyard without paying its mana cost. If a spell is cast this way, exile it.