Centaur Chieftain

Charge. If the Centaur Chieftain moves at least 30 feet straight toward a target and then hits it with a Greataxe attack on the same turn, the target takes an extra 14 (4d6) Slashing damage.

Trampling Charge. If the Centaur Chieftain moves at least 30 feet straight toward a creature and then hits it with a hooves 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 Centaur Chieftain can make another attack with its hooves against it as a bonus action.

Multiattack. The centaur makes three attacks: two with its Greataxe and one with its hooves.

Greataxe. Melee Weapon Attack: +8 to hit, reach 10 ft., one target. Hit: 11 (1d12 + 5) piercing damage.

Hooves. Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit: 12 (2d6 + 5) bludgeoning damage.