Death Mutation
Oracle Text
Destroy target nonblack creature. It can't be regenerated. Create X 1/1 green Saproling creature tokens, where X is that creature's converted mana cost.
Card Rulings
8/1/2008 If the target is illegal on resolution, the entire spell doesn’t resolve. As such, you will not put any tokens onto the battlefield.
Sorcery, STRIKE TWO!
"Nonblack", STRIKE THREE! Yer out!
This is actually the only one of the cycle I would never play. I look askance at Æther Mutation, but this one is just why?