(Dinosaur) Centrosaurus

A large beast strays away from the herd. It looks like a triceratops, but has only one, very large horn. Its frill seems shorter as well, but you can’t get around how massive that horn is. It looks at you suddenly and, with a grunt, rushes forward with its head down.

Originally Posted by Darknecromancer of the Wizards Community forums.

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Centrosaurus is a relative of the Triceratops that has one large horn on its nose as opposed to the Triceratops’ three horns. They behave in a similar way and lived in the same time period. Mixed herds of Ceretosia are not uncommon, and seeing massive herds of them means trouble for any carnosaur in the area looking for a meal.

Huge animal
Hit Dice	12d8+84 (138 hp)
Initiative	-1 (-1 Dexterity)
Speed	30 ft. (6 squares)
Armor Class	18 (-2 size, -1 Dexterity, +11 natural), touch 7, flat-footed 18
Base Attack/Grapple	+9/+22
Attack	Gore +13 melee (3d8 +5)
Full Attack	Gore +13 melee (3d8 +5)
Space/Reach	15 ft./10 ft.
Special Attacks	Impale, powerful charge, trample
Special Qualities	Low-Light Vision, Scent
Saves	Fort +14, Ref +7, Will +5
Abilities	Strength 20, Dexterity 9, Constitution 23, Intelligence 2, Wisdom 13, Charisma 7
Skills	Hide -9, Listen +8, Spot +7
Feats	Improved Critical, Power Attack, Run, Weapon Focus(Gore), Improved Toughness
Environment	Warm plains, forests, hills
Organization	Solitary, Pair, or herd (2-5)
Challenge Rating	7
Treasure	None
Alignment	Always neutral
Advancement	13-24 HD (Huge); 25-36 HD (Gargantuan)
Level Adjustment	–

Combat

A Centrosaurus charges and hopes to ram its horn through its opponent. If it can, It tries to impale them, after which it tosses their dying body aside to move on to the next threat.

Impale (Ex) The horn of Centrosaurus is very long and easily impales the targets of a gore attack. Those hit by a Centrosaurus are left impaled on its horn and are considered grappled by the Centrosaurus. It must succeed a grapple check to pry itself off the horn.

Powerful Charge (Ex) A Centrosaurus deals double damage on a charge.

Trample (Ex) As a full-round action, a Centrosaurus with this special attack can move up to twice its speed and literally run over any opponents at least one size category smaller than itself. If the trampling Centrosaurus moves over only some of a target’s space, the target can make an attack of opportunity against the Centrosaurus at a -4 penalty. A trample attack deals bludgeoning damage (3d8 +7). Trampled opponents can attempt attacks of opportunity, but these take a -4 penalty. If they do not make attacks of opportunity, trampled opponents can attempt Reflex saves to take half damage. The save DC against a creature’s trample attack is 21. A trampling Centrosaurus can only deal trampling damage to each target once per round; no matter how many times its movement takes it over a target creature.