Flying

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

4UBR: Exile Nicol Bolas, the Ravager, then return him to the battlefield transformed under his owner's control. Activate this ability only any time you could cast 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.