Brachiosaurus, Sky-Browsing Colossus

Gargantuan beast, unaligned
Challenge: 10 (5,900 XP) • Proficiency Bonus: +4

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Armor Class 17 (natural armor)

Hit Points 225 (18d12 + 108)

Speed 40 ft.

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STR	DEX	CON	INT	WIS	CHA
26 (+8)	8 (−1)	22 (+6)	2 (−4)	14 (+2)	10 (+0)

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Saving Throws

Con +10, Wis +6

Skills

Perception +6, Survival +6

Damage Resistances

Bludgeoning, Piercing, Thunder; all from nonmagical attacks

Condition Immunities

Prone, Grappled, Restrained

Senses

Passive Perception 16

Languages —

Proficiency Bonus +4

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Traits

Titanic Mass

The Brachiosaurus cannot be forcibly moved or knocked prone. It ignores difficult terrain and can step over creatures and obstacles Large or smaller without penalty.

Canopy Strider

The Brachiosaurus can see and reach through vertical foliage up to 30 feet overhead. It suffers no penalties to sight or movement in dense forests.

Tremor Stride

Whenever the Brachiosaurus moves 10 feet or more on its turn, all creatures within 10 feet of its path must succeed on a DC 18 Strength saving throw or fall prone.

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Actions

Multiattack

The Brachiosaurus makes two attacks: one with Tail Slam and one with Stomp.

Tail Slam

Melee Weapon Attack: +12 to hit, reach 20 ft., one target.
Hit: 31 (4d10 + 9) bludgeoning damage. The target must succeed on a DC 18 Strength saving throw or be knocked back 15 feet and fall prone.

Stomp

Melee Weapon Attack: +12 to hit, reach 10 ft., one creature beneath or adjacent.
Hit: 42 (6d12 + 6) bludgeoning damage. If the target is prone, it takes an additional 13 (3d8) damage.

Trumpeting Roar (Recharge 5–6)

The Brachiosaurus releases a thunderous bellow audible for miles. Creatures of its choice within 60 feet must make a DC 16 Constitution saving throw or take 18 (4d8) thunder damage and be deafened for 1 minute. On a success, they take half damage and are not deafened.

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Legendary Actions

(Optional – use for epic encounters)

The Brachiosaurus can take 2 legendary actions, choosing from the options below. Only one legendary action can be used at a time and only at the end of another creature’s turn.

• Swipe. The Brachiosaurus makes one Tail Slam attack.
• Seismic Step (Costs 2 Actions). The Brachiosaurus stomps the ground. Each creature within 15 feet must succeed on a DC 18 Strength saving throw or fall prone and take 13 (3d8) bludgeoning damage.
• Move. The Brachiosaurus moves up to half its speed without provoking opportunity attacks.

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Tactics

• Not aggressive, but will defend itself or its herd with overwhelming force.
• Uses Tail Slam to knock creatures away, then Stomp to punish the prone.
• Trumpeting Roar is used early to scatter attackers or alert nearby beasts.
• In a herd, multiple Brachiosaurs can create tremors and control the entire battlefield.

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Environment

• Found in ancient jungles, floodplains, and lush highland forests.
• Lone wanderers are rare; herds can reshape ecosystems and migration routes.

Brachiosaurus

This incredibly tall quadruped has a huge, almost erect neck, a short tail, a very broad chest, thin legs and a short head with a flat snout and a high crest. Although the seismosaurus might be longer and heavier, the brachiosaurus is the tallest of all the dinosaurs. The largest specimens (such as the sauroposeidon) reach Colossal+ size. Brachiosaurs are almost 90 feet long and nearly 50 feet tall. They are slow and clumsy by even the standards of the sauropods, but their long legs and neck allow it to reach the tallest branches. They are herd organisms, and because of their size have no natural enemies.

Originally Posted by Shade of the En World forums.

On this Thread

Heaviest of all dinosaurs, this monster dwells in warm swamps and lakes. Its long front feet are deadly. It weighs roughly 90 tons, three times more than a brontosaurus. Brachiosaurus is one of the tallest and largest dinosaurs known. It is a huge herbivore that walks on 4 legs, but unlike other large herbivores, it’s front legs are longer than it’s hind legs, which elevates it’s neck like a giraffe.

Dinosaur, Brachiosaurus
Colossal animal
Hit Dice	28d8+282 (408 hp)
Initiative	-2
Speed	40 ft. (8 squares)
Armor Class	15 (-8 size, -2 Dexterity, +15 natural), touch 0, flat-footed 15
Base Attack/Grapple	+21/+52
Attack	Stamp +28 melee (5d8+15/19-20)
Full Attack	2 stamps +28 melee (5d8+15/19-20)
Space/Reach	50 ft./40 ft.
Special Attacks	Trample 10d8+22
Special Qualities	Damage reduction 6/- (from Damage Reduction feats), Low-Light Vision, Scent
Saves	Fort +27, Ref +14, Will +13
Abilities	Strength 40, Dexterity 7, Constitution 29, Intelligence 1, Wisdom 14, Charisma 12
Skills	Listen +15, Spot +27
Feats	Alertness, Damage Reduction (x2), Diehard, Endurance, Epic Toughness, Great Fortitude, Improved Critical (stamp), Iron Will, Skill Focus (Spot)
Environment	Warm and temperate forests and hills
Organization	Solitary, pair or pod (5-20)
Challenge Rating	12
Treasure	None
Alignment	Always neutral
Advancement	29-56 HD (Colossal); 57-84 HD (Colossal+)
Level Adjustment	–

COMBAT

A brachiosaurus is most likely to use its front claws for uprooting trees, but when attacked by something large enough to concern it (usually a rival brachiosaur), it can use them to deadly effect. Against most dangers, it simply walks over them.

The stamps of a brachiosaurus are considered to be bludgeoning and slashing weapons for the purposes of overcoming damage reduction.

Trample (Ex): A brachiosaurus can literally run over any creatures in its way that are of Gargantuan or smaller size. Creatures trampled must make a Reflex save (DC 39 half) or take 10d8+22 damage. The save DC is Strength-based.

Originally appeared in Monstrous Compendium Volume Three: Forgotten Realms Appendix (1989).