Planar Bestiary
Towering thirty feet at the shoulder, myrmic colossi are six-legged creatures suited to the plane of Arborea, where everything is bolder, bigger, and more violent than on Material Plane worlds. And Arborea is well suited to containing these insectoid beasts whose footsteps can shiver forests. Unfortunately for other planes of existence, myrmic colossi are adept at burrowing. Some have discovered passages to other planes through dimensional tunnels they either find in their burrowing or somehow manage to dig for themselves.
A myrmic colossus is gargantuan, a horrifying sight to see towering over a city's or castle's walls. If viewed from far enough away, the resemblance to a lowly ant is unmistakable. Perhaps they are a manifestation of the ant's revenge for being trod on and exterminated from homes. The myrmic colossus is protected by thick layers of chiton. Their clacking mandibles are like thunder, and their abdominal stinger can spray acid mist over a wide area.
As planar conjunctions come and go, cracks in the cosmic firmament emerge, allowing creatures of better-than-average industry to find and exploit those normally hidden ways. Like regular ants, myrmic colossi defend their colonies, seek to create new ones, and forage afar for food. It is this latter case where myrmic colossi spread out into other dimensions, laying down a track that their fellows may follow for fresh foraging on other planes of existence.
Motive: Hungers for flesh; establish colonies on new worlds
Environment: Arborea, worlds of the Material Plane, usually alone, either creeping below the earth or wandering the surface looking for forage
Health: 50
Damage Inflicted: Major wound (8 points)
Armor: 3
Movement: Short; immediate when burrowing
Modifications: Speed defense as level 3 due to colossal size
Combat: The myrmic colossus attacks twice each round, once with their mandibles and once with their stinger. In addition to regular damage, the victim of a stinger attack who fails a Might defense task takes an additional major wound (8 points) from acid, or 3 extra points even if successful.
The colossus can spray acidic gas from their stinger about once each minute, filling an adjacent area a short distance in diameter. Creatures in the area that fail a Speed defense task take 8 points of damage from the acidic gas, or 3 points of damage even if the defense succeeds.
Underground, a myrmic colossus can tactically slam their gargantuan bulk into a tunnel wall as part of another action, causing the tunnel to partially collapse into an area up to a short distance in diameter. Every creature in the area except the myrmic colossus must succeed on a level 5 Speed defense task or take 8 points of damage and become trapped under rubble, until they can escape with a successful level 5 Might task as their action. The affected area becomes difficult terrain for creatures smaller than the myrmic colossus.
A myrmic colossus is immune to acid damage.
Interaction: Myrmic colossi are only a little more intelligent than their normal cousins. If a foraging myrmic colossus finds easyto.overcome prey (like a village of human-sized creatures on another plane), they may lay waste to it, gather up all those who fell in defense of their home and couldn't get away, and drag them back to their colony (possibly on Arborea, or perhaps another planar location where a new colony has been established) to feed their young.
Use: An important shrine or location collapses into a sinkhole, revealing a vast subterranean tunnel. Faintly, as if from miles away, insectile chittering is audible.
GM Intrusion: The attack sends a character flying through the air a long distance, inflicting an additional major wound (8 points) on a failed Speed defense task, or 3 points even if successful.