Tumblethorn
Tumblethorn
IDENTITY
- Common Name: Tumblethorn
- Classification: Plant
- Alternate Names: Rollthorn, the Rolling Death (Jazirah caravaneers), Bloodweed
DESCRIPTION
At rest, the Tumblethorn is indistinguishable from the large, dried thorn-bushes that tumble across Jazirah's desert plains with every wind. It sits roughly four to five feet in diameter, loosely ball-shaped, a mass of hooked woody branches and barbed spines — until it begins to move. In motion, the Tumblethorn unfurls into a larger, more purposeful form, extending thorny lash-tendrils that can grapple targets at range and using its rolling momentum to knock creatures prone. It is fast for a plant — able to build and sustain considerable rolling speed on flat desert ground.
- Size: Large — roughly 4 to 5 feet in diameter when balled, extends to 8-10 feet when lashing
- Distinguishing Traits: Moves in straight lines with unusual speed when active, audible hissing-scraping sound when rolling, thorn tendrils extend significantly beyond its core mass
HABITAT & RANGE
Native to the desert plains and open scrublands of [Jazirah](Jazirah/Welcome to Jazirah), particularly the flat interior regions where it can build rolling momentum. It requires open terrain — rocky ground and canyon passages slow it significantly. It is more commonly encountered during or after windstorms, which both provide cover for its approach and supply the initial momentum that triggers its active state.
BEHAVIOR
The Tumblethorn spends most of its existence drifting passively with the wind, indistinguishable from dead plant matter. When it detects ground vibration through tremorsense, it anchors briefly to assess the source, then activates — uncoiling and beginning to roll toward the detected vibration. It leads with Rolling Strike to knock targets prone, then uses Thorny Entanglement to immobilize anyone who remains close. It has no tactical complexity; it simply charges and ensnares with relentless mechanical persistence.
THREAT & DEFENSE
Dangerous primarily due to speed and area effect. Its Roll Strike attack covers significant ground and can knock multiple targets prone in a line. Its Thorny Entanglement punishes anyone who tries to stand and fight in melee range. Fire is its primary weakness and will stop it rapidly; slashing and piercing resistance makes conventional melee attacks inefficient. The most effective counter is simply to create distance and use fire or bludgeoning at range.
STAT BLOCK
Large Plant, Unaligned
Armor Class 17 (natural armor)
Hit Points 112 (15d10 + 30)
Speed 40 ft.
| STR | DEX | CON | INT | WIS | CHA |
|---|---|---|---|---|---|
| 18 (+4) | 16 (+3) | 14 (+2) | 1 (-5) | 12 (+1) | 3 (-4) |
Damage Resistances piercing, slashing
Damage Vulnerabilities fire
Senses tremorsense 60 ft., passive Perception 11
Languages —
Challenge 6 (2,300 XP)
Traits
- False Appearance: Indistinguishable from an ordinary tumbleweed while motionless.
- Roll Strike: The Tumblethorn can move up to 40 feet in a straight line, rolling over creatures in its path. Each creature must make a DC 15 Dexterity saving throw or take 18 (3d8 + 4) bludgeoning damage and be knocked prone.
- Thorny Entanglement: A creature that starts its turn within 10 feet of the Tumblethorn must make a DC 14 Strength saving throw or be restrained by thorny tendrils. The creature can repeat the save at the end of each of its turns, ending the effect on success.
Actions
- Multiattack: The Tumblethorn makes two Thorn Lash attacks, or uses Roll Strike instead of both.
- Thorn Lash: Melee Weapon Attack: +7 to hit, reach 15 ft., one target. Hit: 15 (2d10 + 4) piercing damage. If the target is Large or smaller, it is grappled (escape DC 15). The Tumblethorn cannot lash a second target while grappling.
- Rolling Barrage (Recharge 5–6): The Tumblethorn rolls rapidly in a 20-foot radius. All creatures in the area must make a DC 15 Dexterity saving throw, taking 21 (6d6) bludgeoning damage on a failure, or half on a success.
Legendary Actions (Optional, for use as CR 7 encounter)
- Vine Whip (Costs 2): One Thorn Lash attack at the end of another creature's turn.
- Erupting Spines (Costs 3): When a creature misses an attack against the Tumblethorn, it releases spines in a 10-foot radius. Creatures must make a DC 14 Dexterity saving throw or take 10 (3d6) piercing damage.