Uloriax (CR 17)

Gargantuan Plant
Alignment: Usually neutral evil
Initiative: +1 (-3 Dex, +4 Improved Initiative); Senses: Spot +26
Languages: Common, Auran, and Druidic

AC: 33 (-4 size, -3 Dex, +30 natural), touch 3, flat-footed 33
Hit Dice: 23d8+184 (287 hp)
Fort +21, Ref +4, Will +7
Speed: 20 ft., climb 20 ft., fly 40 ft. (perfect)
Space: 20 ft./20 ft.
Base Attack +17; Grapple +43
Attack: Bite +28 melee
Full Attack: 3 bites +28 melee
Damage: Bite 2d8+14/19-20
Special Attacks/Actions: Breath weapon, spell-like abilities
Abilities: Str 38, Dex 4, Con 26, Int 15, Wis 11, Cha 16
Special Qualities: Immunity to electricity and sonic, plant traits, regeneration 20, wand mastery
Feats: Blind-fight; Flyby Attack; Improved Critical (bite); Improved Initiative; Power Attack; Quicken Spell-Like Ability (lightning bolt); Snatch; Weapon Focus (bite)
Skills: Climb +38, Concentration +22, Jump +8, Knowledge (arcana) +28, Spellcraft +28, and Spot +26
Advancement: 24-35 HD (Gargantuan), 36-69 HD (Colossal)
Climate/Terrain: Warm mountains
Organization: Solitary
Treasure/Possessions: No coins, no goods, triple magic (at least half wands)

Source: Web

Breath Weapon (Su): 60-foot cone, once every 1d4 rounds, damage 12d6 sonic, Reflex DC 29 half. The save DC is Constitution-based.

Spell-Like Abilities (Sp): At will -- fog cloud, gust of wind (DC 15), wind wall; 3/day -- control weather, control winds (DC 18), lightning bolt (DC 16), whirlwind (DC 21); 1/day -- call lightning storm (DC 18), reverse gravity (DC 20), storm of vengeance (DC 22). Caster level 23rd. The save DCs are Charisma-based.

Regeneration (Ex): Cold and fire deal lethal damage to an uloriax.

Wand Mastery (Su): The uloriax can use wands and other spell trigger items as if it had access to the druid spell list. Additionally, it can wield a wand in each of its four tendrils, and it can activate each wand simultaneously as a free action, up to once per round per wand. The uloriax can activate up to four wands per round in this manner.

An uloriax prefers to use its spell-like abilities to assault targets from afar before swooping in for the kill. In combat, it utilizes any wands it owns and attacks with its three stalked maws. Against particularly troublesome opponents, an uloriax uses its Snatch feat, then lifts up into the air to drop its foe.