Sebacean Mutant Treant
Huge aberrant magical beast (plant, undead)
Level 21 Elite Soldier XP 6400

Initiative +16        Senses Perception +14; low-light vision
Screaming Tree (Psychic) aura 2; an enemy in the aura at the start of its turn takes 10 psychic damage.
HP 400; Bloodied 200
AC 38; Fortitude 36, Reflex 33, Will 34
Saving Throws +2
Speed 6 (forest walk)
Action Points 1

(⚔) Slam (standard, at-will) ✦ Psychic

Reach 3; +25 vs AC; 2d6+9 damage, and ongoing 5 psychic damage (save ends).

⚔ Psychic Roots (minor, at-will) ✦ Illusion

Reach 4; +23 vs Will; the target is knocked prone and immobilized (save ends).

Psychic Shock

A creature hit by the treant's opportunity attack is immobilized until the end of the treant's next turn.

Alignment Evil        Languages Deep Speech
Str 28 (+19)      Dex 18 (+14)      Wis 9 (+9)
Con 24 (+17)      Int 10 (+10)      Cha 23 (+16)

Published in Dungeon Magazine 159, page(s) 46.