Semiramis, Assassin

Infect, Unblockable
Servants Constitution - This creature can not be
exiled.
Sikera Usum - {p/c}{p/c}{p/c}, {t}: Create a black
enchantment token named haze that says "At the beginning of your upkeep put a -1/-1 counter
on each creature your opponents control.".
When a creature dies, if its toughness was less
than 1, it deals 2 servant damage to its controller.
"Honestly, I cannot stand a face-to-face fight like
this. Come, let's get this over with."