Rundown. If the ceratosaurus moves at least 30 feet straight toward a creature and then hits it with a claw attack on the same turn, that target must succeed on a DC 14 Strength saving throw or be knocked prone. If the target is prone, the ceratosaurus can make one bite attack against it as a bonus action.

Combative Mount. A trained dinosaur is proficient with light, medium, and heavy armor.

Multiattack: The ceratosaurus makes two attacks: one with its claws and one with its bite or its horn.

Bite: Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 15 (2d10 + 4) piercing damage.

Claws: Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 7 (1d6 + 4) slashing damage.

Horn: Melee Weapon Attack. +6 to hit, reach 5 ft., one target. Hit: 13 (2d8 + 4) bludgeoning damage, and the target must succeed on a DC 14 Strength saving throw or be knocked prone.