Sandor, The Pacifist

Defender, Lifelink
Justice—Whenever a creature an opponent controls
deals damage to a creature you control, you may pay {b}{b}. If you do, place a +1/+1 counter on Sandor,
The Pacifist and have him fight the creature that
dealt damage this way.
"They killed a friend of mine"
-"You've got friends?"
"Not anymore. They're mine."
—Sandor Clegane to the Brotherhood