Unearthed Arcana: Pestilence Domain (Cleric)

Description

Clerics of the Pestilence Domain harness supernatural plague and decay to erode their enemies’ vitality. Though common folk often regard pestilence as a force of rampant destruction, Clerics of this domain wield it with surgical precision.

The Pestilence Domain is associated with gods of poison, disease, famine, and rot. These deities use blighted crops, magical outbreaks, and swarms of insects and vermin to motivate or punish mortals in accordance with their doctrines. Their followers include apothecaries, doctors, poisoners, and royal tasters. Other followers might devote themselves to a god of pestilence to spare their communities or loved ones from plague

I like this subclass pitch right away. The theme is clear, the imagery is strong, and, most importantly, it leaves room for more than one kind of character fantasy. Even in a Unearthed Arcana called Villainous Options, this domain is not locked into evil for evil’s sake. That last line about serving a god of pestilence in order to protect your community is what really sells it for me. It gives players a clean way to use this dark flavor in a heroic campaign, and that makes the subclass much easier to imagine at a typical table.

Level 3: Blight Weaver

You gain the following benefits.

Inoculated Soul. You have Resistance to Necrotic and Poison damage, and you can’t be infected by magical contagions.

Rot and Fester. Damage from your Cleric spells and Cleric features ignores Resistance to Necrotic and Poison damage. Additionally, when you cast a Cleric spell or use a Cleric feature that deals either Necrotic or Poison damage, you can change that damage to the other type.

This feels solid and thematic. Resistances are always nice to get, and Necrotic plus Poison is a very on-brand pair for the subclass. The resistance-bypass clause is also smart, even if Poison especially tends to run into Immunity more often than Resistance. The damage-swapping is not the flashiest feature in the world, but it does a good job reinforcing the idea that this Cleric manipulates disease and decay with precision rather than just throwing out one narrow damage type and hoping it lands.

Level 3: Pestilence Domain Spells

Your connection to this divine domain ensures you always have certain spells ready. When you reach a Cleric level specified in the Pestilence Domain Spells table, you thereafter always have the listed spells prepared.

Cleric Level	Prepared Spells
3	Detect Poison and Disease, Protection from Poison, Ray of Enfeeblement, Ray of Sickness
5	Stinking Cloud, Vampiric Touch
7	Blight, Giant Insect
9	Contagion, Insect Plague

I like this spell list a lot. For me, subclass spell lists do not need to be pure optimization; they need to feel like they belong to the subclass. This one absolutely does. Detect Poison and Disease, Ray of Sickness, Blight, Contagion, and Insect Plague all fit the fantasy perfectly. It feels less like a random grab bag of strong options and more like a list that was chosen to express the subclass’s identity.

Level 3: Plague Blessing

As a Magic action, you can present your Holy Symbol and expend a use of Channel Divinity to manifest a 5-foot Emanation of withering plague that surrounds you or one willing creature you touch for 1 minute. It ends early if you dismiss it (no action required), manifest it again, or have the Incapacitated condition.

Each creature of your choice that starts its turn in the Emanation must succeed on a Constitution saving throw against your spell save DC or gain 1 Exhaustion level. This feature can’t increase a creature’s Exhaustion level higher than a level equal to your Wisdom modifier (minimum of 1 Exhaustion level). For example, if you have a Wisdom score of 16, this feature can’t increase a creature’s Exhaustion level higher than 3.

The plague spread by this feature manifests with a specific symptom. Choose it from the Plague Symptoms table or determine it randomly.

1d6	While Infected, a Creature …
1	Is drained of all color, appearing in monochromatic grays.
2	Sheds metallic, rust-hued flakes and creaks while moving.
3	Secretes foul-smelling mucus.
4	Is surrounded by a cloud of buzzing insects.
5	Sprouts fungi or other foliage from its flesh.
6	Is covered in glowing pustules.

This is the feature that really grabbed me. I like that the Emanation can go on you or on an ally, because that gives the subclass flexibility depending on how your Cleric is built. A front-line Cleric in heavy armor can carry the plague directly into the fight, while a more back-line caster can hand that role to someone else. Mechanically, the Exhaustion is what makes this feel genuinely fresh. Exhaustion is brutal. Even one level matters, and repeated failed saves can spiral fast. That makes this feel scary in a way that matches the subclass fantasy. On top of that, the symptom table is gross in exactly the right way.

Level 6: Virulent Burst

When an enemy within 60 feet of you is reduced to 0 Hit Points, you can take a Reaction to cause plague to burst from that creature, spreading pestilence in a 10-foot Emanation originating from the enemy; if the enemy had at least 1 Exhaustion level, the size of the Emanation increases to 20 feet.

Each creature of your choice in the Emanation makes a Constitution saving throw against your spell save DC. On a failed save, a target suffers one of the following effects:

• Putrid Shock. The target has the Incapacitated condition until the end of its next turn. While Incapacitated, the target’s Speed is 0.
• Toxic Infection. The target takes 3d6 Necrotic or Poison damage (your choice).

You can use this feature a number of times equal to your Wisdom modifier (minimum of once), and you regain all expended uses when you finish a Long Rest.

I love this feature. It turns the subclass’s plague theme into battlefield momentum: enemies die, and that death spreads the infection further. Against groups, this looks excellent, but even against tougher targets, the Putrid Shock option stands out. Incapacitated plus Speed 0 until the end of the next turn is a nasty control effect. Toxic Infection is good too, especially because the subclass already supports Necrotic and Poison damage so well. This reads strong, flavorful, and fun.

Level 17: Vermin Form

As a Bonus Action, you can shape-shift into a Medium swarm of Tiny pests, such as cockroaches, maggots, or rats. While you’re in this form, you retain your general shape, personality, memories, and the ability to speak; any equipment you’re wearing or carrying doesn’t transform with you, but you can continue using that equipment while in this form.

Your game statistics remain the same, apart from the following changes:

• Condition Immunities. You have Immunity to the Grappled, Paralyzed, Prone, and Restrained conditions.
• Damage Resistances. You have Resistance to Bludgeoning, Piercing, and Slashing damage.
• Movement. You can enter and occupy another creature’s space and vice versa. Additionally, you have a Climb Speed equal to your Speed, and you can climb difficult surfaces, including along ceilings, without needing to make an ability check.
• Plague Bites. Whenever you enter an enemy’s space, that creature takes damage equal to your Wisdom modifier; the damage is Necrotic, Piercing, or Poison (your choice). A creature also takes this damage when it enters your space or ends its turn there. A creature takes this damage only once per turn.

You revert to your true form after 10 minutes, if you choose to end the transformation (no action required), if you have the Incapacitated condition, or if you die. Once you use this feature, you can’t use it again until you finish a Long Rest unless you expend a level 5+ spell slot (no action required) to restore your use of it.

This is the one feature I am less certain about. Flavor-wise, turning into a swarm of cockroaches, maggots, or rats is fantastic. Mechanically, it gives you a lot of useful defenses and movement tools, and the ability to move through enemy spaces is very cool. My hesitation is mostly that it does not hit me as hard as the lower-level features do. It might end up playing better than it reads, especially because it synergizes nicely with Plague Blessing if you carry that Emanation into multiple enemy spaces, but on first impression it feels a little less exciting than the subclass’s earlier power spikes.

Overall, I would absolutely play this subclass. The flavor is strong, the mechanics are memorable, and the Exhaustion angle gives it something that feels genuinely distinct from other Cleric domains. If anything here needs another pass, it is probably Vermin Form, not because it is weak exactly, but because the rest of the subclass sets such a high bar.

Wizards is opening the feedback survey for this Unearthed Arcana on April 9, 2026. I am very curious to see what other players think about the balance here, especially around Plague Blessing.

Would you play this subclass, and if so, what would you want tweaked before final release? See you next time. Cheers.