Large Beast (Dinosaur), Unaligned
AC 13 (natural armor)    Initiative +1 (11)
HP 85 (10d10 + 30)
Speed 40 ft.
Mod Save
STR 18 +4 +6
DEX 11 +0 +0
CON 16 +3 +5
Mod Save
INT 2 −4 −4
WIS 13 +1 +1
CHA 8 −1 −1
Skills Perception +3, Survival +3
Senses Passive Perception 13
Languages
CR 4 (XP 1,100; PB +2)
Traits

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

Momentum Stride. If the aardonyx moves at least 20 feet straight toward a creature and then hits it with a Slam attack on the same turn, the target takes an extra 7 (2d6) bludgeoning damage and must succeed on a DC 14 Strength saving throw or be knocked prone.

Sure-Footed Colossus. The aardonyx has advantage on saving throws against being knocked prone or moved against its will.

Actions

Multiattack. The aardonyx makes two Slam attacks.

Slam. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 14 (2d8 + 4) bludgeoning damage.

Stomping Advance (Recharge 5–6). The aardonyx moves up to its speed in a straight line. Each Medium or smaller creature whose space it enters must make a DC 14 Dexterity saving throw, taking 18 (4d8) bludgeoning damage on a failed save, or half as much damage on a successful one. A creature that fails the save is also knocked prone.

Description

Native to the rolling wilds of the Beastlands, aardonyx are towering bipedal herbivores that embody the plane’s endless motion and abundance. Though peaceful by nature, their sheer mass and thunderous strides make them dangerous when threatened. Herds migrate constantly, reshaping the land through instinct alone.

Behavior & Ecology

Aardonyx travel in loose herds of three to six, constantly on the move in search of fresh growth. Predators rarely attack healthy adults; most conflicts arise when outsiders panic the herd or block its migration path. In the Beastlands, the passage of aardonyx is considered a sign of renewal—where they tread, new life soon follows.


Variant: Herd Guardian

Some aardonyx develop heightened protectiveness.

  • Increase Wisdom to 15 (+2).

  • Gain the following trait:

Protect the Young. When a creature within 10 feet of the aardonyx is knocked prone or reduced to half its hit points, the aardonyx can use its reaction to move up to 20 feet toward the attacker and make one Slam attack.

Monster Tags: Dinosaur

Habitat: DesertForestGrasslandPlanar (Beastlands)

Treasure:  None

WilliamTaylor7652

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