Multiattack

The minotaur gores once and attacks twice with its greataxe.

Gore

Melee Weapon Attack: +11 to hit, reach 5 ft., one target. Hit: 19 (3d8 + 6) piercing damage and the target makes a DC 19 Strength saving throw being pushed up to 5 feet away and falling prone on a failure. If the minotaur moves at least 10 feet straight towards the target before the attack the attack deals an extra 13 (3d8) damage.

Greataxe

Melee Weapon Attack: +11 to hit, reach 10 ft., one target. Hit: 25 (3d12 + 6) slashing damage.

Fire Breath (Recharge 5-6)

The minotaur exhales fire in a 30-foot cone. Each creature in the area makes a DC 19 Dexterity saving throw taking 55 (10d10) fire damage on a failed save or half damage on a success.