Cannibal Brute

Brute. A melee weapon deals one extra die of its damage when the crazed cannibal hits with it (included in the attack).

Insane. The crazed cannibal is immune to all spells and magical effects that impact the mind.

Multiattack. The crazed cannibal makes four attacks: one with its bite and three with its greatsword.

Bite. Melee Weapon Attack: +12 to hit, reach 5 ft., one target. Hit: 15 (2d6 + 7) piercing damage and 15 (2d6+7). If the target is a creature, it must succeed on a DC 21 Constitution saving throw against disease or become poisoned until the disease is cured. Every morning at dawn, the target must repeat the saving throw, reducing its hit point maximum by 5 (1d10) on a failure. The disease is cured on a success. The target dies if the disease reduces its hit point maximum to 0. This reduction to the target’s hit point maximum lasts until the disease is cured.

On a critical hit, the cannibal gains 4d4 temporary hit points as they consume the mouthful.

Rusted Greatsword. Melee Weapon Attack: +12 to hit, reach 5 ft., one target. Hit: 23 (4d6+7) slashing damage.