Whenever Etali, Primal Storm attacks, exile the top card of each player's library, then you may cast any number of spells from among those cards without paying their mana costs.
Near Mint - $0.50
Near Mint Non-English - $0.50
Lightly Played - $0.50
Lightly Played Non-English - $0.50
Played - $0.40
Played Non-English - $0.40
Heavily Played - $0.30
Heavily Played Non-English - $0.30
Damaged - $0.30
Damaged Non-English - $0.30