From Pathfinder Book of the Dead, which isn't enabled.

Excorion

CREATURE 7

These hideous undead creatures result from an exquisitely painful necromantic process where flayed humanoids are animated through their exposed blood vessels. Cults of undeath typically punish apostates and renegades with this cruel method of reanimation, though sacrificial victims or unfortunate prisoners might suffer a similar fate. Excorions have supernaturally strong, pulsing veins that extend outward from their bodies like thousands of tiny, bloody cilia.

Excorions move their bulks not with their dead muscles but with heaving contractions of their blood vessels, which pull them along in a swift but jerky manner. Excorions can shift their magical blood easily throughout their bodies, allowing them to squirt blood from their gaping, skinless mouths or to messily mark their foes.

Most excorions are so broken by the process of their creation that they retain few memories of their past lives or identities. This is, typically, a minor blessing in their cursed tale, protecting the excorion's former friends and family from truly realizing their horrific fate.

Perception +18; darkvision

Skills Acrobatics +16, Athletics +17, Stealth +16

Str +4, Dex +5, Con +4, Int -3, Wis +1, Cha +0

AC 24; Fort +17, Ref +18, Will +14

HP 160, void healing; Immunities bleed, death effects, disease, mental, paralyzed, poison, unconscious; Weaknesses vitality 10, slashing 5

Vein Walker

The excorion moves about by way of hundreds of pulsating blood vessels, which stretch from its body in dozens of tight, ropy bundles and anchor it to the ground. An excorion can't be Tripped, Shoved, or otherwise forcibly moved except by magic, and the excorion ignores difficult terrain (but not greater difficult terrain).

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 35 feet

Melee Fist +18 (agile, finesse, unarmed), Damage 2d8+8 bludgeoning plus Grab

Ranged Bloody Spew +18 (range increment 20 feet), Damage 3d6+4 bludgeoning

Target is Dazzled for 1 round.

Bloody Handprint

The excorion plants a magical handprint on the target, marking them as chosen for death. The excorion makes a fist Strike against an adjacent creature; this doesn't count toward the excorion's multiple attack penalty. On a hit, the attack does no damage, but the creature becomes observed to every excorion within 60 feet, even if an excorion's line of sight would be blocked by a wall or other obstacle. This effect lasts until the handprint is washed off, which requires water and spending 3 actions to fully clean off.

Vital Transfusion

Requirements The excorion has at least 70 Hit Points

Effect The excorion sacrifices itself and transfers its bloody, vital energy to a willing living creature within 30 feet. The excorion is immediately destroyed, and the targeted living creature heals a number of HP equal to half the excorion's remaining HP at the time that it used this ability. The living creature is Slowed 1 during its next turn as its body adjusts to the newly transfused blood and vital energy; the living creature also counts as an excorion for 1 minute for the purpose of seeing other excorions' Bloody Handprint marks.

Vomit Blood

The excorion spews necrotic blood all over a foe it has Grabbed or Restrained. The grabbed creature must succeed at a DC 25 Fortitude save or become Sickened 2.

Grab

Requirements The monster's last action was a successful Strike that lists Grab in its damage entry, or the monster has a creature Grabbed or Restrained

Effect If used after a Strike, the monster attempts to Grapple the creature using the body part it attacked with. This attempt neither applies nor counts toward the creature's multiple attack penalty.

The monster can instead use Grab and choose one creature it's grabbing or restraining with an appendage that has Grab to automatically extend that condition to the end of the monster's next turn.

Pathfinder Book of the DeadOGL