ng huge plant 

Perception +25; low-light vision, tremorsense (imprecise) 60 feet

Languages Arboreal, Common, Sylvan; speak with plants

Skills Athletics +23, Diplomacy +22, Forest Lore +28, Nature +25, Stealth +19

Str +7 Dex -1 Con +5 Int +4 Wis +7 Cha +4

AC  33; Fort +23, Ref +17, Will +27

HP 230; Weaknesses axe vulnerability, fire 15; Resistances bludgeoning 10, piercing 10

Axe Vulnerability An arboreal archive takes 10 additional damage from axes.

Abeyance Rift If an arboreal archive dies unexpectedly before passing on their knowledge in a succession ritual, the amassed lore within their roots and boughs explodes out in a shock wave that deals 8d10 mental damage to creatures within 30 feet (DC 32 basic Will save) before dissipating; those who fail also fall prone.

Speed 25 feet

Melee [>] branch +25 (reach 15 feet), Damage 3d10+10 bludgeoning plus Improved Knockdown (page 305)

Primal Innate Spells DC 32, attack +24; 6th tangling creepers; 3rd earthbind (at will); 2nd entangle; Constant (4th) speak with plants

Memory Maelstrom [>>>] (concentrate, incapacitation, mental, nonlethal, primal) The arboreal archive tries to overwhelm foes with a surge of information it has absorbed over its long life. This surge deals 5d6 mental damage to each enemy within 40 feet, who must attempt a DC 32 Will save. Critical Success The creature maintains its composure, takes no damage, and is temporarily immune to Memory Maelstrom for 1 minute.Success The creature is stunned 1 and takes half damage.Failure The creature takes full damage and is stunned 3.Critical Failure The creature takes double damage, is confused for 2d4 rounds, and is stunned 3.

Bestiary 3, page 21.