Engineered Carcinogen

Equipped creature gets +1/-1.
Utilize {b/g}. (Equip {b/g}. You may pay {b/g}{b/g} to attach this to target creature as a sorcery.)
When Engineered Carcinogen would be unattached from a creature, that creature fights itself first.
No one was quite sure what would happen when the Phyrexians met the Eldrazi.