Warath

Rampage. When the warath reduces a creature to 0 hit points with a melee attack on its turn, the warath can take a bonus action to move up to half its speed and make a horn attack.

Charge. If the warath moves at least 20 feet straight toward a target and then hits it with a horn attack on the same turn, the target takes an extra 9 (2d8) bludgeoning damage. If the target is a creature, it must succeed on a DC 12 Strength saving throw or be knocked prone.

Horn. Melee Weapon Attack: +6 to hit, reach 5 ft., one creature. Hit: 6 (1d4 + 4) piercing damage. 

Battle Axe. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 8 (1d8 + 4) slashing damage, or 9 (1d10 + 4) slashing damage if used with two hands.