Instead of being the usual sickly green and withered grey, Rubedo's pallor is one of a deep, consistent scarlet from exposed skull to bootless feet. An alchemist of some skill before Death swept the Kingdom, it attempted to stave off zombification by a hastily mixed concoction. Instead, it turned itself into a seeping, vile thing full of unbalanced humors. It still hungers for the flesh of the living like all of its kin.

-Records of the Charnel House

Rubedo

Medium undead (zombie), neutral evil

Armor Class 8

Hit Points 67 (9d8 + 27)

Speed 20ft

Str 15 Dex 6 Con 17 Int 12 Wis 6 Cha 5

Condition Immunities blinded, exhaustion, poisoned

Damage Resistances acid, fire

Damage Immunities poison

Senses darkvision 60 ft., passive Perception 8

Languages understands Common, Elvish, and Gnomish but can't speak

Challenge 3 (700 XP)

Noxious Humors.

Every time the zombie takes bludgeoning, piercing, or slashing damage all creatures within 5ft of it take 1 poison damage.

Undead Fortitude.

If damage reduces the zombie 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 zombie drops to 1 hit point instead.

Actions

Multiattack.

The zombie makes two attacks

Slam.

Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 6 (1d6 + 3) bludgeoning damage plus 4 (1d8) poison damage.

Acid Breath (Recharge 5-6).

The zombie exhales acid a 15-­foot cone. Each creature in that line must make a DC 13 Dexterity saving throw, taking 13 (4d6) acid damage on a failed save, or half as much damage on a successful one. This action shares recharge with Fire Breath.

Fire Breath (Recharge 5-6).

The zombie exhales fire a 30-­foot line that is 5 feet wide. Each creature in that line must make a DC 13 Dexterity saving throw, taking 13 (4d6) fire damage on a failed save, or half as much damage on a successful one. This action shares recharge with Acid Breath.

Reactions

Alchemical Revitalization.

If the zombie succeeds on an Undead Fortitude saving throw, combustible acid explosively the holes in its body. All creatures within 10ft of the zombie must succeed on a DC 13 Dexterity saving throw or take 7(2d6) acid damage and 7(2d6) fire damage. The zombie regains 1 hit point for each creature reduced to 0 hitpoints by this reaction.