Warmonger of the Peaks

Infuriated 1 (At the beginning of your upkeep, you may pay {r/w} or {b/r}. If you do, when an opponent is dealt damage this turn, put a +1/+1 counter on this creature.)
As long as Warmonger of the High Peaks is Infuriated, creatures you control get +2/+1 and have first strike.