Ultimatum of Doom

Escalate {w}{r}, {w}{b}, or {b}{r} (Pay one of these costs for each mode chosen beyond the first.)
Choose one or more:
-Each player discards a card. You may have target player lose life equal to the card discarded this way with the highest converted mana cost.
-Destroy target creature. Draw a card.
-Exile the top 3 cards of your library. Until end of turn, you may cast those cards.