New Monster - Essence of Evil For Your Old School Campaigns

Drifting in from the 'half worlds' and other whens are the infections and remains that were other alternative Earths and timelines. What they once called populations. Weird finds and strange relics sometimes hold such horrors. They are monsters of incredible malignancy  that are actually the twisted remains and demonic slurry that is left over after the forces of Chaos and the Abyss have finished with a plane. Toxic spiritual left over after the demons and supernatural shock troops  have come and gone often clinging to various pieces of cultural debris that drifts across the planar winds. Until finally settling in the wastelands of Accursed Atlantis.Adventurers often encounter these horrors out in the deep wastes and become the victims of the essence of Evil itself. This stuff resembles certain primal pre demonic life forms that still drift on the winds of the never ending storms of Saturn and Jupiter. 

When encountered the stuff will try to force itself into any openings and orifices that adventurers present. And then mutate their hosts from the inside out as random mutations burst forth from within the corpse. The corpse will seem to scream out silent horror but is actually presenting proto lifeform like spores that will drift on the winds to infect others with this chaotic cancer of horror and depravity.

Frequency: Uncommon 

Number appearing: 1d6 

Armor Class: 7 

Move:4"

Hit Dice: 8 

% in Lair: Nil

Treasure Type: G or
better often found clinging to relics 

No of Attacks: 3-12

Special Attacks: See Below

Special Defenses: See Below 

Magic Resistance: Standard
but see below 

Intelligence: Non 

Alignment: Chaotic Evil 

Size : Med to Large 

Psionic ability: Nil 

Attack/Defense Modes : Nil 

Anyone encountering these horrors must save vs death or become mutated as the Chaotic energies seep out from the slurry that makes up this virus like chaotic mess. It dissolves flesh and skin for 3-12 points of damage per exposure plus mutation. The thing feeds on magical energies dividing into 1d6 more smaller essences with half hit points and doing half damage. 

 The essence can be driven back by a cleric of a god of Law quite easily but the stuff is utterly without mind or reason and will return again and again after 1d6 rounds after it retreats. Only a pentacle of Law or cross of order will hold these things at bay.

Artwork by Zdzisław Beksiński and presented as a homage to this great artistic master. No copyright or trade mark is inferred, this is a fan homage to one of art's greatest masters and painters. His official website can be found HERE