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Brontotherium

A pair of Megacerops coloradensis, Dmitry Bogdanov, Brontotherium
A pair of Megacerops coloradensis, Dmitry Bogdanov

This mammoth creature appears to be a rhinoceros of truly epic proportions. Instead of a single horn, however, a bony, Y-shaped knob juts from its snout.

In the midst of this lost world, where the rules of time are cast aside, a magnificent and colossal creature roams the primeval landscapes – the Brontotherium. As an observer in this ancient realm, let me take you on a journey to behold this wondrous behemoth:

Physical Description:

  • The Brontotherium stands tall, a living titan that reaches heights of up to 15 feet at its immense shoulders.
  • Its colossal body is sheathed in thick, leathery skin, a natural armor that safeguards it from the wilds of this lost world.
  • Atop its colossal head, it boasts an impressive pair of horn-like structures. The larger set resembles mighty battering rams, curving downward with an air of imposing strength.
  • A massive hump rests on its broad shoulders, making it a recognizable silhouette in the primeval landscape.
  • Their barrel-like torsos house a complex digestive system, exquisitely evolved for processing the abundance of ancient vegetation they consume.

General Description: In this untouched, lost world, it takes center stage as a symbol of an era long past. As you, the observer, traverse this timeless landscape, you’ll find yourself immersed in a world where time is but a concept, and awe-inspiring creatures like the Brontotherium continue to roam free.

Its preferred habitat includes sprawling, unspoiled grasslands and swampy terrains, ensuring access to the abundant prehistoric flora that sustains them. Their massive, horned visage may appear intimidating, yet these beings are primarily herbivores, peacefully grazing on the ancient vegetation that blankets the land.

These majestic giants meander through the lost world at a leisurely pace, leaving their indelible mark on the landscape with each deliberate step. Their mighty horns serve as both an emblem of strength for attracting potential mates and as formidable weapons when their survival is at stake. Encountering a Brontotherium in this primeval realm is a humbling experience, reminding us of an age when colossal beings held dominion over the Earth.

  • Brontotherium 5e
  • Brontotherium 3.5

Brontotherium

Huge beast, unaligned

Armor Class 15 (natural armor)

Hit Points 126 (11d12 + 55)

Speed 40 ft.

STRDEXCONINTWISCHA
21 (+5)8 (-1)20 (+5)2 (-4)12 (+1)7 (-2)

Skills Perception +3

Senses passive Perception 13

Languages understands but can’t speak any language

Challenge 7 (2,900 XP)

Charge. If the Brontotherium moves at least 20 feet straight toward a target and then hits it with a ram attack on the same turn, the target takes an extra 18 (4d8) bludgeoning damage. If the target is a creature, it must succeed on a DC 16 Strength saving throw or be knocked prone.

Actions Multiattack. It makes two attacks: one with its gore and one with its stomp.

Gore. Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit: 30 (4d10 + 5) piercing damage.

Stomp. Melee Weapon Attack: +8 to hit, reach 5 ft., one prone target. Hit: 27 (3d12 + 5) bludgeoning damage.

Trample (Recharge 5-6). The Brontotherium moves up to its speed. During this movement, it can enter Large or smaller creatures’ spaces. Whenever it enters a creature’s space, the creature must succeed on a DC 16 Strength saving throw or be knocked prone. If a creature is knocked prone, the Brontotherium can make one stomp attack against it as a bonus action.

Reactions Rend. When the Brontotherium hits a creature with its gore attack, it can use a reaction to make a stomp attack against the same target.

Originally Posted by InsanePsychoRabbit of the Wizards Community forums. 
On this Thread 

This huge rhino-like mammal with an aggressive temperament. Instead of the normal rhinoceros horn, brontotherium has a peculiar Y-shaped knob of bone on its snout. These large mammals can be found in warm forests and plains where they move about in small herds of up to a dozen individuals. Because of its great size and aggressiveness, an adult has few natural enemies, and can kill or severely injure even lion-sized predators. A typical brontotherium stands 8 feet tall at the shoulder and weighs in excess of 2 tons. 

BRONTOTHERIUM CR 7
Always Neutral Huge animal

Init +0; Senses Low-Light VisionListen +11, Spot +10

Languages-
DEFENSE
AC 18, touch 8, flatfooted 18

(-2 Dexterity, +10 natural)

hp 138 (12 HD)

Fort +17, Ref +8, Will +7
OFFENSE
Speed 40 ft. (8 squares)

Melee Slam +19 (3d6+18)

Space 15 ft.; Reach 10 ft.

Base Atk +9; Grapple +29
STATISTICS
Atk Options Power Attack, powerful charge, toss

Abilities Strength 34, Dexterity 10, Constitution 25, Intelligence 2, Wisdom 13, Charisma 2

Feats AlertnessEnduranceGreat Fortitude, Iron Will, Power Attack

Skills Listen +11, Spot +10
ECOLOGY
Environment Warm forests and plains

Organization solitary or herd (2-12)

Treasure none

Advancement 13-18 HD (Huge); 19-36 HD (Gargantuan)
SPECIAL ABILITIES
Powerful Charge (Ex): A brontotherium deals 6d6+36 points of damage when it makes a charge. 

Toss (Ex): Targets up to Large size struck by a brontotherium’s powerful charge attack must make a DC 28 Reflex save or be thrown 1d2x10 feet. Thrown creatures suffer 1d6 points of damage for every 10 feet they are thrown and land prone.
The save DC is Strength-based.

COMBAT 

Highly aggressive and temperamental, a brontotherium will attack nearly any Medium-size creature that wanders too close. This is especially true if there are young present in the herd, as the adults will kill or drive off any perceived threat. It attacks by slamming its great blunt horn into enemies, and often opens combat with a charge. Creatures struck by a brontotherium’s charge are often pitched into the air with a powerful toss of the beast’s head.

FOR PLAYER CHARACTERS

druid of 13th level or higher can gain a brontotherium as an alternative animal companion.

Although temperamental, a brontotherium can make an excellent pack animal and an outstanding war mount. Hill and stone giants have been known to ride these massive creatures into battle, a pairing that can make for a nearly unstoppable cavalry charge. Rearing one from a calf requires a DC 27 Handle Animal check. An adult can carry a staggering 5,592 pounds as a light load.

A brontotherium can be summoned with summon nature’s ally VI or a higher level summon nature’s ally spell. Treat the brontotherium as being on the 6th-level list on the Summon Nature’s Ally table.

BRONTOTHERIUM IN THE REAL WORLD

Brontotherium belongs to an extinct group of mammals called brontotheridae, which are related to modern day horses, rhinos, and tapirs. Although it was very rhino-like in appearance, it was actually more closely related to horses than rhinos. Brontotherium grazed the warm forests and plains of the Late Eocene (35 million years ago), but died out due to an inability to adapt to the drying climate of the Oligocene and the spread of tougher vegetation (such as grasses).

Aepycamelus and Brontotherium from Animal Archives: Prehistoric Animals I, Copyright 2007, Blackdirge Publishing; Author Aeryn Rudel.

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