Surrak, Khan of Savagery can't be countered.

{2}{R/G}{G/U}: Reveal the top six cards of your library, you may put a creature card from among them onto the battelfield. Then exile the top card of your library, you may play that card this turn.

At the beginning of your precombat main phase, creatures you control gain "{2}: This creature fights target creature you don't control."