I came up with this today while thinking of a quick Halloween themed adventure involving a scarecrow and some jack-o-lanterns. I wanted something a little lower in CR than the jack-o-lanterns, so I sort of modified a vegepygmy. And yes, before the comments commence, I based this off of the minipet from World of Warcraft.
Sinister Squashling CR 1/2
XP 200
NE Small plant
Init +6; Senses blindsense 30ft., low-light vision; Perception +4
DEFENSE
AC 16, touch 13, flat-footed 14; (+2 Dex, +3 Natural, +1 Size)
hp 5 (1d8+1)
Fort +3, Ref +2, Will +0
Defensive Abilities plant traits, DR 5/slashing or bludgeoning; Immune fire
OFFENSE
Speed 30ft.
Melee vine whip +1 (1d4)
Ranged pumpkin toss +3 (1d4 plus 1d6 fire)
Special Attacks vine whip (1d4), pumpkin toss (1d4 plus 1d6 fire)
STATISTICS
Str 11, Dex 14, Con 12, Int 8, Wis 11, Cha 11
Base Atk +0; CMB -1; CMD 11
Feats Improved Initiative
Skills Perception +4, Stealth +10 (+18 in vegetation); Racial Modifiers +4 Stealth (+12 in vegetation)
SQ camouflage
ECOLOGY
Environment any temperate
Organization solitary, pair, or patch (3-10)
Treasure incidental
SPECIAL ABILITIES
Camoulage (Ex) Since a sinister squashling looks like a normal squash or gourd, most commonly a pumpkin, when at rest. a DC 20 Perception check is required to notice it before it attacks for the first time. Anyone with ranks in Survival or Knowledge (nature) can use either of those skills instead of Perception to notice the plant.
Vine Whip (Ex) A sinister squashling can attack with its vine ‘arms’ to deal 1d4 slashing damage.
Pumpkin Toss (Ex) A sinister squashling can detach its head and throw it at its target, dealing 1d4 damage plus the causing the target to burn (1d6) as per the special ability, with a DC 10 Reflex save. Without its head, the sinister squashling is affected as if it had the blinded condition, but gains blindsense of 30 ft. It remains in this condition until it can find another suitable pumpkin or similar vegetable to replace the one it lost.
Sinister squashlings are carnivorous and malevolent plants created by unique necromantic energies that only occur during the fall. They make their homes in pumpkin patches and similar crops, relying on their unique nature to kill their prey. As a last resort, a sinister squashling will throw its 'head' at its target to try and escape.
A sinister squashling looks like a jumble of vines standing two feet tall with a pumpkin, gourd, or squash for a head. It usually sports what looks like a face with two triangular eyes and a malicious mouth. It uses two large vines on the side of its 'body' as whips.