Greenbound Troll (CR 7)

Large Plant (Augmented Giant)
Alignment: Usually chaotic evil
Initiative: +3 (Dex); Senses: darkvision 90 ft., low-light vision, scent, tremorsense 60 ft., Listen +5, and Spot +6
Languages: Any language known before transformation.

AC: 23 (-1 size, +3 Dex, +11 natural), touch 10, flat-footed 20
Hit Dice: 6d8+48 (75 hp); DR: 10/magic and slashing
Fort +13, Ref +5, Will +3
Speed: 30 ft.
Space: 10 ft./10 ft.
Base Attack +4; Grapple +21
Attack: Claw +12 melee
Full Attack: 2 claws +12 melee and bite +7 melee or slam +12 melee and bite +7 melee
Damage: Claw 1d6+9 and bite 1d6+4, slam 1d6+9 and bite 1d4+4
Special Attacks/Actions: Rend 2d6+13, spell-like abilities
Abilities: Str 29, Dex 16, Con 27, Int 6, Wis 9, Cha 10
Special Qualities: fast healing 3, grapple bonus, plant traits, regeneration 5, resistance to cold 10 and electricity 10
Feats: Alertness; Iron Will; Track
Skills: Hide -1 (+15 in forested areas*), Listen +5, Move Silently +3 (+19 in forested areas), and Spot +6
Advancement: By character class
Climate/Terrain: Any forests
Organization: Solitary, pair, or gang (3-4)
Treasure: Standard

Source: Lost Empires of Faerûn

This giant-sized, bipedal plant has long arms that look like knotted, knobby tree branches, and its legs end in three toelike roots. Dozens of leafy twigs and thorns adorn its face, arms, legs, and torso.

In the crumbling Siluvanedenn ruins of Telardon, powerful and ancient magical energies seep from an unknown number of buried arcane treasures. These energies transform hapless creatures nearby into plantlike beings of great strength.

A greenbound creature looks much like it did before transformation, although certain changes are apparent. The creature's flesh has been replaced by pulpy wood and thickly corded creepers, and tiny branches stick out from its torso, arms, and legs. Any feathers, hair, or fur it once had have been replaced by some combination of green vines, moss, flowers, and leaves.

Greenbound creatures speak any languages they knew before transformation, although their voices are now deep and gravelly.

Augmented Subtype

A creature receives this subtype whenever something happens to change its original type. Some creatures (those with an inherited template) are born with this subtype; others acquire it when they take on an acquired template. The augmented subtype is always paired with the creature's original type. For example, a wizard's raven familiar is a magical beast (augmented animal). A creature with the augmented subtype usually has the traits of its current type, but the features of its original type. For example, a wizard's raven familiar has an animal's features and the traits of a magical beast.