From Pathfinder #174: Shadows of the Ancients, which isn't enabled.

Hivebound Arboreal

CREATURE 19

RARE HUGE EVIL PLANT

Variant arboreal regent

Perception +33; low-light vision, tremorsense (imprecise) 120 feet

Languages Arboreal, Common, Fey; speak with plants

Skills Athletics +39, Intimidation +32, Nature +33, Stealth +24

Str +10, Dex -1, Con +10, Int +0, Wis +6, Cha +5

Tremorsense 120 feet

Tremorsense allows a monster to feel the vibrations through a solid surface caused by movement. It is an imprecise sense with a limited range (listed in the ability). Tremorsense functions only if the monster is on the same surface as the subject, and only if the subject is moving along (or burrowing through) the surface.

Constant Spells

A constant spell affects the monster without the monster needing to cast it, and its duration is unlimited. If a constant spell gets counteracted, the monster can reactivate it by spending the normal spellcasting actions the spell requires.

AC 44; Fort +35, Ref +26, Will +33

HP 400; Weaknesses fire 20; Resistances bludgeoning 15, piercing 15

Axe Vulnerability

The hivebound arboreal takes 15 additional from axes.

Swarm Host (aura, primal)

20 feet. The hivebound arboreal is host to a cloud of flying ants that swarm around it and gnaw at any creature within the aura. Non-arboreal creatures that enter the aura or start their turn within it take 7d8 piercing damage from the bites (DC 38 basic Fortitude). If the hivebound arboreal fails a saving throw against an area effect, the biting ants die off, and the aura is deactivated until new ants swarm out at the end of the hivebound arboreal's next turn (or after 1 minute, if the hivebound arboreal critically fails it saving throw).

Speed 25 feet; Freedom of Movement

Melee Branch +36 (reach 15), Damage 4d12+16 bludgeoning plus Improved Grab

Melee Root +36 (reach 20, trip), Damage 4d8+16 bludgeoning

Ranged Rock +36 (brutal, range increment 120 feet), Damage 4d10+16 bludgeoning

Primal Innate Spells DC 41, attack +33; 9th Nature's Enmity, Horrid Wilting; 6th Tangling Creepers; 3rd Earthbind (At Will); 2nd Entangle; Constant (4th) Freedom of Movement, Speak with Plants

Constrict

4d6+16 bludgeoning damage, DC 41 basic Fortitude

The monster deals the listed amount of damage to any number of creatures Grabbed or Restrained by it. Each of those creatures can attempt a basic Fortitude save with the listed DC.

Offered to the Swarm

Trigger The arboreal Grabs or Constricts a foe

Requirements The hivebound arboreal's swarm host is active

Effect The arboreal offers up the triggering creature to its ants to feed. The triggering creature takes damage as from the swarm host aura, but thereafter gains a +4 circumstance bonus to Escape the Grab until it Escapes.

Throw Rock

The monster picks up a rock within reach or retrieves a stowed rock and throws it, making a ranged Strike.

Improved Grab

Trigger The monster's last action was a successful Strike that lists Improved 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 as a free action. This attempt neither applies nor counts toward the creature's multiple attack penalty.

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

Pathfinder #174: Shadows of the AncientsOGL