Trampling Charge. If the gorgon moves at least 20 feet straight toward a creature and then hits it with a gore attack on the same turn, that target must succeed on a DC 18 Strength saving throw or be knocked prone. If the target is prone, the gorgon can make one attack with its hooves against it as a bonus action.

Gore. Melee Weapon Attack: +10 to hit, reach 5 ft., one target. Hit: 18 (2d12 + 7) piercing damage.

Hooves. Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit: 16 (2d10 + 7) bludgeoning damage.

Petrifying Breath (Recharge 5–6). The gorgon exhales petrifying gas in a 30-foot cone. Each creature in that area must succeed on a DC 16 Constitution saving throw. On a failed save, a target begins to turn to stone and is restrained. The restrained target must repeat the saving throw at the end of its next turn. On a success, the effect ends on the target. On a failure, the target is petrified until freed by the greater restoration spell or other magic.

The Adamantine Gorgon can take 3 legendary actions.

Move. The Adamantine Gorgon moves up to its speed.

Gore. The Adamantine Gorgon makes a gore attack.

Charge (Costs 2 Actions). The Adamantine Gorgon makes a trampling charge.