Yldir, King of Terrors

-3: Draw 5 cards. Yldir, King of Terrors gain 4 loyalty counters.
-7: Exile target player's graveyard. Target creature you control gains Reach and Deathtouch until; end of turn.
-10: You gain 3 life. Create 3 1/1 black Swamp Beast token. Shuffle target player's library. Destroy target permanent.