Putrid Weapons. The sawbones' weapon attacks are magical. When it hits with any weapon, the weapon deals an extra 3d6 poison damage (included in the attack). Additionally, any humanoid that is killed by these weapons rises in 1d10 rounds as a zombie. The zombie acts as an ally to the sawbones, but is not under its control.

Stench. Any non-undead creature that starts its turn within 5 feet of the sawbones must succeed on a DC 15 Constitution saving throw or be poisoned until the start of the creature’s next turn. On a successful saving throw, the creature is immune to the stench of all sawbones for 1 hour.

Undead Fortitude. If damage reduces the sawbones to 0 hit points, it must make a Constitution saving throw with a DC of 5 + the damage taken, unless the damage is radiant or from a critical hit. On a success, the sawbones drops to 1 hit point instead.

Multiattack. The zombie sawbones makes one cleaver attack and one slam attack.

Cleaver. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 7 (1d8 + 3) slashing damage plus 10 (3d6) poison damage.

Slam. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 6 (1d6 + 3) bludgeoning damage plus 10 (3d6) poison damage.

Necrotic Plume (Recharge 6). The sawbones releases a rotting cloud of energy. Every creature within a 30 ft sphere around the sawbones must make a DC 15 Constitution saving throw, taking 21 (6d6) necrotic damage on a failure, or half as much on a success. Any undead creatures within range of the necrotic plume take no damage, and instead regain hit points equal to the rolled damage.