Parasitic boring maggots fester upon the tree, suckling upon the souls within the tree until they grow into a carrion crawling two-headed worm beast. When the corpse crawlers kill sentient creatures they harvest the creature's soul, process it in their guts and store it inside of the tree by spitting up a smoky greenish-blue sap-like substance. When enough souls (roughly 1 soul per foot of the Woetree's height) are stored within the sap, a skull-shaped seed will grow within the upper roots - to be later harvested by cultists. The Death Gods of Xibalba have their cults (particularly the cults of Hun-Came ("One Death") and Vucub-Came ("Seven Death")) plant these seeds along necrotic ley-lines around the world.
Corpse Crawler
Many-legged, segmented worm stretching 9' long. A human-looking face on both ends of its body with two pairs of four tentacles stretching from their inside their mouths.
HD 3+2 (17hp), Speed x1 human
(walk or climb walls and ceilings)
AC as Leather, Intelligence 2, Morale 9
No. Appearing d3, Classification Bogey
-Actions-
Paralyzing tentacles x8 (4 from each end), +3 to hit, causes paralysis for 2d4 Turns (10-minutes) (save versus paralysis). Paralyzed victims will be level-drained (1 level/round) if the corpse crawler is left to feed.
-Defense-
A Corpse Crawler's two-headed nature means they are unable to be back-stabbed.
-Maggots-
Corpse Crawler maggots have 1HP; they do not attack other creatures but incidental contact can call for a save vs paralysis. Each tree hosts 2d20 maggots.