Amer, Hunter of Hunters

Renown 3(When this creature deals combat damage to a player, if it isn't renowned, put three +1/+1 counters on it and it becomes renowned.)

At the beginning of your combat phase, if Amer, Hunter of Hunters is Renown, choose First Strike, Haste, Menace, Vigilance, Trample, or Reach. Attacking creatures you control have that ability until end of turn.