Proposal: Alien attack!
Each day, there shall be a chance for the Alien to Attack and Infected. The Alien Attacks if rolling a DICE 5 results in a 2 or 1. The Alien will then Attack a random Infected, with all Infecteds equally probable.
The Attacked Infected then incurs the following changes: their Mutation increases by 2 and their Limbs decrease by 1.
benzene:
This is my first proposal, did I do it right? Did I word it properly?