From Pathfinder Lost Omens Shining Kingdoms, which isn't enabled.

Walcofinde

CREATURE 2

Forever entombed, walcofindes are vengeful undead creatures inhabiting the enclosed spaces in which they were sealed and eventually perished. As they ultimately succumbed to a slow death by starvation and suffocation, walcofindes are similar to zombies in their hunger and rage. What sets them apart are their vicious claws of stone-sharpened bone, protruding through worn down, fleshless fingers as a result of desperate and futile attempts to escape.

Walcofindes are bound to their death site. These "wall-coffined" undead can manifest their forms within the structure where they were sealed, possessing the walls and stealthily traversing along them. Walcofindes' manifestations adopt the patterned appearance of the structure's materials, but not its physical properties. They take the form of hungry, grasping humanoid torsos emerging from the walls like harrowing extensions of their eternal prison. Unable to ever fully leave their structures, these undead are destined to be a part of it forever.

Despite their decaying forms, walcofindes retain the intelligence they would've had in life; for example, a walcofinde who was previously a soldier could understand enemy tactics and assess the appearance and equipment of their foes, allowing them to strategize and prioritize targets as well as organize with other nearby walcofindes to formulate an attack.

Perception +5; darkvision, tremorsense (imprecise) 30 feet

Languages Common, Necril

Skills Athletics +8, Stealth +11

Str +3, Dex +1, Con +3, Int +2, Wis +1, Cha +0

AC 17; Fort +10, Ref +4, Will +7

HP 35; Immunities bleed, death effects, disease, paralyzed, poison, sleep, unconscious; Weaknesses vitality 5

Void Healing

A creature with void healing draws health from void energy rather than vitality energy. It is damaged by vitality damage and is not healed by vitality healing effects. It does not take void damage, and it is healed by void effects that heal undead.

Speed 25 feet; Wall Glide

Melee Claw +9, Damage 1d8+3 bludgeoning plus Grab

Sneak Attack

A walcofinde deals an additional 1d6 precision damage to Off-Guard creatures.

Structural Possession (manipulate, morph)

A walcofinde can merge themself with any wall they can touch within their sealed chamber and can create a manifestation of themself through any part of that wall on either side within 100 feet. This manifestation appears as the rotting upper half of the walcofinde protruding from the wall, but their skin is patterned as if they were the same structural material as the wall they're emerging from. While manifested, the walcofinde's claw attack gains a reach of 10 feet, but they can move only by using Wall Glide. Any damage done to the manifestation affects the walcofinde themself. A walcofinde can Dismiss their structural possession to retreat back into their sealed chamber.

Wall Blend (concentrate)

Requirements The walcofinde is manifested using Structural Possession and isn't observed by any enemies

Effect Until the next time they act, the walcofinde's manifestation changes their visual appearance to match the surrounding wall. They have an automatic result of 31 on their Stealth checks to Hide.

Wall Glide (concentrate)

Requirements The walcofinde is manifested using Structural Possession

Effect The walcofinde's manifestation Strides, submerging into the wall and reemerging from the wall at the end of their movement. If the walcofinde takes 2 actions to Wall Glide, their manifestation can Stride twice before reemerging. In either case, they can move only within walls that are within 100 feet of their sealed chamber.

Pathfinder Lost Omens Shining KingdomsORC