Robb, King in the North

When Robb enters the battlefield, create a
4/4 Wolf Creature Token named "Grey
Wind" with Double Strike and Vigilance
if you do not already control a creature with that name.
When Robb attacks, all Stark and Wolf creatures gain +1/+1 until end of turn.
Tell Lord Tywin, winter is coming for him.
—Robb Stark