Courser of Kruphix

Delve (Each card you exile from your graveyard while casting this spell pays for 1.) Flying X, T, Exile X cards from your graveyard: Target creature gets -X/-X until end of turn.

Destroy target creature or planeswalker.

At the beginning of your upkeep, surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)

Whenever another creature dies, scry 1. B: This creature gains deathtouch until end of turn. 1G: This creature gains hexproof until end of turn.

Creatures you control have lifelink. 2BB, T: Return target creature card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step. If it would leave the battlefield, exile it instead of putting it anywhere else. Activate only as a sorcery.