Evolve Necrosis FTW. Gotta have corpse-to-living tx. The real problem with plague inc. is the motivation though the disease is likely dead one turn after humanity.

This is where we need a conspiracy theory that all complex life is just an intricate biological shell/animate castle-o-saurus, designed to protect and nourish a few self replicating acids, with defense mechanisms to try to kill any interlopers that seek to replicate faster without dissuading anything sexually compatible.