Targ Nar, Demon-Fang Gnoll (Adventures in the Forgotten Realms)

Legendary Creature Ñ Gnoll - Pack tactics Ñ Whenever Targ Nar attacks, if you attacked with creatures with total power 6 or greater this combat, attacking creatures get +1/+0 until end of turn.
{2}{R}{G}: Double Targ Nar's power and toughness until end of turn.