Fluffet, the Cuddleterror

Deathtouch, lifelink
Any time Fluffet, the Cuddleterror is blocked, curse a creature not under your control.
Anytime Fluffet, the Cuddleterror dies, curse three creatures not under your control.
Curse — at the end of the owner's end step, put a -1/-1 counter on this creature. Creature can't die from curse, but remains alive at 1 toughness. If positive counters are put on cursed creature, those counters will disappear as well.
(Curses can be stacked)