Long-horned Bison
CREATURE 6Much like their smaller bison cousins, long-horned bison are bovines with short faces, two horns, a shaggy coat, and a noticeable hump on their back. Despite their relation to more placid bovines, however, long-horned bison are ill-tempered and territorial. Their tread shakes the ground, while the thunder of their stampedes can be mistaken for an earthquake. Long-horned bison weigh upwards of 4,500 pounds and measure up to 9 feet tall and 16 feet long. Their horns, measured tip to tip, can be almost as wide as the bison are tall.
The bison reduces the effects it suffers from cold environments by one step.
The bison kicks up dust and shakes the ground as it charges. The stampeding bison Strides up to twice its Speed in a straight line, dealing 4d8+8 bludgeoning damage (DC 24 basic Reflex) to any Large or smaller creature in its path.Multiple bison can participate in Rolling Thunder by spending this ability's actions and waiting to charge until the herd is ready. Before the beginning of its next turn, a bison can then charge as a reaction triggered by an adjacent bison beginning its Rolling Thunder charge. All bison in the combined charge must charge in parallel lines, so the areas can't overlap. The combined charge deals an additional 3d8 bludgeoning damage to creatures in the area, and a creature that fails the Reflex saving throw is also knocked Prone.