Champion Of Brawlers

Vigilance, first strike, brawl (Whenever this
creature receives combat damage from a creature and survives, it deals damage equal to it's power to the creature.)
Renown 2 (Whenever this creature deals combat
damage to a player, if it isn't renowned, put two
+1/+1 counters on it and it becomes renowned.)
As long as Champion Of Brawlers is renowned, it
gains double strike.