Charge. If the rhinoceros moves at least 20 feet straight towards a target and then hits it with a gore attack on the same turn, the target takes an extra 2-9-16 2d8 bludgeoning damage. If the target is a creature, it must succeed on a DC 15 Strength saving throw or be knocked prone.
Gore. Melee Weapon Attack: +7 to hit, reach 5 ft, one target. Hit: 7-14-21 2d8+5 Bludgeoning Damage.