Myrmidon α

"It's form swelled and throbbed, bulging and bulking up past all recognition of the man it once was-not that it was much of a man to begin with." Brother Dorn of the The Order of Gideon 


One type of infecious undead from the grim future timelines caused by Paradox Testing Labs meddling with dormant anomalous viruses, fungi, and parasites. Much mike many of these creations, the Myrmidon  α starts out as a regular looking humanoid undead. However when critically damaged; they mutate horribly into much larger, stronger monsters.

Basic Information

Anatomy

In thier primary form, they have the form of regular zombified humanoids
In their second form, Their upper body muscalature grows significantly, complete with fleshy growths and occasionally additional eyes.

A Myrmidon α uses the same statistics as a zombie (monster manual) with the following additional traits. Its CR is also 2 (450xp)
Features:
Infectious: Humanoid, beast, and dragon-typed creatures slain by this creature Become the zombie equivalent of that creature-with the exception that they also gain this trait.
Mutation β: When reduced to 8 or less hit points, this creature must make a constitution saving throw equal to 10 or half the damage taken by the last attack (whichever is higher, upto a maximum of 25). On a successful save they regain 22 hitpoints (any additional hit points become temporary hit points instead), thier strength is increased to 18 (+4), their constution increases to 20 (+5), Their size becomes large, and their Slam attack deals 1D8+4 bludgeoning damage instead of the normal amount. This ability cannot be used if the Myrmidon α was slain with fire or acid damage.