Batman

Defiant (Whenever this creature attacks, if defending player controls an untapped creature with power
greater than this creature's toughness,
put a +1/+1 counter on this creature.)
Flying (This creature can't be blocked except by creatures with flying and/or reach.)
Fierce (Whenever this creature attacks, if defending
player has more cards in hand than each other player,
put a +1/+1 counter on it.)