Moonlight Stalker

Menace(This creature can't be blocked except by two or more creatures.)
Madness {1}{r}(If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)
Whenever Moonlight Stalker deals combat damage to a player, put a +1/+1 counter on it.
"Aww, They're so vulnerable during sleep."