flavorText: "I headbutted a troll. And won."
name: Arni Brokenbrow
printings: KHM, PKHM, PRM
text: Haste\nBoast — {1}: You may change Arni Brokenbrow's base power to 1 plus the greatest power among other creatures you control until end of turn. (Activate only if this creature attacked this turn and only once each turn.)