Flying

When Nicol Bolas, the Ravager enters the battlefield, each opponent discards a card.

: Exile Nicol Bolas, the Ravager, then return him to the battlefield transformed under his owner's control. Activate only as a sorcery.

+2: Draw two cards.

−3: Nicol Bolas, the Arisen deals 10 damage to target creature or planeswalker.

−4: Put target creature or planeswalker card from a graveyard onto the battlefield under your control.

−12: Exile all but the bottom card of target player's library.