V.S.H., Demon of Shadows

Shadow, Flash, First Strike, Lifelink.

Whenever V.S.H. deals combat damage to a player, put a +1/+1 counter on each attacking creature.

Whenever a creature attacks you, put a Punishment token
on it. (It's an aura with "at the beginning of each turn, this deals 1 damage to enchanted permanent.")

"I am the shadow that lurks in the shadow to hunt the shadow while casting no shadow... or would that make me a vampire? Making catch phrases is hard."