Iroh, Dragon of the West 119 (Avatar: The Last Airbender: Eternal-Legal)

Haste Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.) At the beginning of combat on your turn, each creature you control with a counter on it gains firebending 2 until end of turn. (Whenever it attacks, add {R}{R}. This mana lasts until end of combat.)

NM - $5.03
LP - $4.03
MP - $2.74
HP - $1.83
DMG - $1.00