Crakos, Chaos Incarnate

When Crakos, Chaos Incarnate enters the battlefield, exile the top 5 cards of your library.
You may play them this turn without paying their
mana costs.
Whenever Crakos attacks, choose one at random:
•Target creature defending player controls deals
damage to itself equal to it's power.
•You gain life equal to the highest mana value
among permanents you control.
•Scry 1. Then, both you and the defending
player draw card.