Infected Broodmother

Doublestrike, Lifelink, Haste, Infect.
Sovereign of Contagion: Whenever this
creature would leave the battlefield, instead
it gets +2/+2, and deals combat damage an additional time each combat, this ability
activates twice each game.
Mother of Spiders: Creatures your opponents
control have: This creature gets -X/+X equal to
its attack and defense.