Fantasy Monster: Thornwall

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Thornwall

A thick tangle of thorns spread quickly across the ground, forming an almost solid wall of growths.

CR 1; XP 400
N Large Plant

Init +1; Senses low-light vision, tremorsense 20 ft.; Perception +1

Defense
AC 12, touch 10, flat-footed 12 (+1 Dex, +2 natural, –1 size)
hp 16 (3d8+3); regeneration 5 (fire or plant-killing effects)

Fort +4; Ref +2; Will +2

Defensive Abilities all-around vision, impassable; Immune plant traits

Offense
Speed 20 ft.

Melee slam +2 (2d4+1)

Space 10 ft.; Reach 5 ft.

Special Attacks hedge wall

Statistics
Str 12, Dex 12, Con 12, Int —, Wis 13, Cha 1
Base Atk +2; CMB +4; CMD 15 (25 against bull-rush and overrun, can't be tripped))

Ecology
Environment plains, forests, gardens
Organization solitary, pair, or hedge (3–12)
Treasure standard

Special Abilities

Hedge Wall (Ex) A group of two or more thornwalls, with each thornwall being adjacent side-to-side to at least one other thronwall, forms a powerful intertwined formation, gaining +1 bonus to attack rolls, damage rolls, saving throws, and AC for each thornwall in the group, to a maximum of +12, and splitting the damage suffered equally between all its members.

Impassable (Ex) As each thornwall is a moving piece of thorny hedge that fully occupies its space and extends around 6 to 7 feet in the air, it is extremely hard to pass through, granting it a +10 bonus to CMD against bull-rush and overrun attempts, and increasing DC of Acrobatics checks to move through its space by 10. Failed attempts to bull-rush, overrun, or move through its space inflict 2d4+1 points of piercing damage. Only creatures four or more size categories smaller can freely move through its space, forcing Tiny creatures attempting to move through thornwall space to make Acrobatics checks. Thornwalls ignore light and heavy vegetation by growing around and through it.

Thornwalls are living walls of tangled thorny bushes that not so much move, as swiftly grow across the ground, leaving withered husks behind. Multiple patches of thornwalls can intertwine together forming impenetrable, and almost literal walls of vegetation.