Rhona, The bringer of plagues

Deathtouch, Trample
Whenever another creature dies
target creature get -0/-1 until end of turn, If a creature you control dies, place a plague counter on target creature an opponent controls.
If a creature with a plague counter on it would die, create a 1/1 pest token with
"when this creature dies you gain 1 life"
The plague will consume you all