Huge Beast (Dinosaur), Unaligned
AC 12 (natural armor)    Initiative −1 (9)
HP 60 (8d12 + 8)
Speed 45 ft.
Mod Save
STR 21 +5 +7
DEX 9 −1 −1
CON 13 +1 +1
Mod Save
INT 2 −4 −4
WIS 12 +1 +1
CHA 9 −1 −1
Skills Perception +3
Senses Passive Perception 13
Languages
CR 2 (XP 450; PB +2)
Traits

Beastlands Instinct. While on natural terrain, the apatosaurus has advantage on Wisdom (Perception) and Wisdom (Survival) checks.

Colossal Frame. The apatosaurus has advantage on saving throws against being knocked prone or forcibly moved. It counts as one size larger when determining the space it occupies for the purpose of grappling.

Trampling Bulk. A creature that starts its turn within 5 feet of the apatosaurus and is prone takes 5 (1d10) bludgeoning damage from its massive shifting weight.

Actions

Stomp. Melee Weapon Attack: +7 to hit, reach 10 ft., one target. Hit: 16 (2d10 + 5) bludgeoning damage.

Sweeping Tail. Melee Weapon Attack: +7 to hit, reach 15 ft., one target. Hit: 13 (2d8 + 5) bludgeoning damage. If the target is Large or smaller, it must succeed on a DC 15 Strength saving throw or be knocked prone.

Description

Towering like a moving hill across the endless plains of the Beastlands, the apatosaurus is a living monument to abundance. Though gentle and slow to anger, its immense bulk and sweeping tail make it a dangerous obstacle to anything foolish enough to threaten it. Where herds of these colossal herbivores wander, the land is reshaped into broad paths and trampled clearings that soon burst back into lush regrowth.

Behavior & Ecology

Apatosaurus herds move slowly but relentlessly, consuming vast quantities of foliage. Smaller predators avoid healthy adults, instead targeting stragglers or juveniles. Despite their immense size, these sauropods are placid unless cornered—at which point their tails become devastating defensive weapons.

In the Beastlands, many celestials view them as sacred embodiments of endurance and patience.


Habitats (Beastlands Only)

  • Endless Verdant Grasslands

  • Broad River Valleys

  • Lush Floodplains

  • Sunlit Savannas

  • Edge-Zones of Primeval Forests


Optional Variant: Elder Pathmaker

Some ancient apatosaurus grow thicker hides and heavier tails.

  • Increase HP to 75.

  • Tail damage increases to 15 (2d10 + 5).

  • Gain the following trait:

Earthshaking Step (Recharge 6). Each creature within 10 feet of the apatosaurus must succeed on a DC 15 Dexterity saving throw or fall prone.

Monster Tags: Dinosaur

Habitat: ForestGrasslandHillPlanar (Beastlands)

Treasure:  None

WilliamTaylor7652

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