Pestilent Midwives

Emerge {2}{b}{b}{g}{g} (You may cast this spell by sacrificing a creature and paying the emerge cost reduced by that creature's mana value.)
When you cast this spell create six 0/0 black Germ creature tokens.
Whenever you cast a spell that is blue, black and green create a 0/0 black Germ creature tokens.
Germ creatures you control get +0/+1.