Whenever Etali 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.

{T}: Target creature gains haste until end of turn.

{T}: Add {C}. {4}, {T}: Target creature can't be blocked this turn.

Equipped creature gets +1/+0 and has haste. Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)

Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn. (It can attack and {T} this turn.)