Agnar vs. Rhaznath, Dark War

Spree (Choose one or more additional costs.)
+ {0} — Search your library for a card, then shuffle and put it into your graveyard.
+ {x}{b}{b} — Destroy up to X target creature, artifact or planeswalker cards.
+ {1}{p/b} — You draw 3 cards, then each player discard 2 cards and mill a card.
+ {b}{b} {line} Target creature you control gets +0/+3
and Deathtouch until end of your turn. Then fights target creature you don't control.
+ {c} {line} Gain 3 life. Waaar