Putrid Bloodline

Corrupted from the very moment they were born, sorcerers of the putrid bloodline are home to a horrific symbiotic disease that emboldens them in return for protection. The host of a putrid bloodline gains horrific powers in exchange for much of their humanity. Their skin may fall off, their hair may fall out, they may start developing lesions and sores, or the most terrifying thing, they may look completely normal. Infect. Consume. Breed. That is what they know. That is what it will do. 

Using these abilities for good is possible, though. Not all infected seek to spread affliction and illness. Some use the power granted to them to do good in the world, using the sickly power they possess to choke out evil and corruption. All things are a family. Protect your hive. 

Fetid Soul

At fist level, you gain immunity to poison damage. Additionally, creatures affected by your spells lose resistance to acid and poison damage. If a creature is immune to poison damage, they are treated as if they have resistance.

When you cast a spell with a saving throw that deals poison, acid, or necrotic damage and the creature fails its saving throw, the creature is poisoned until the end of your next turn. If the creature is already poisoned and they fail their save, instead increase the spell's level by 1. 

When you hit a spell attack roll against a creature with a spell that deals poison, acid, or necrotic damage, the creature is poisoned until the end of your next turn. If the creature is already poisoned, instead increase the spell's level by 1. 

Hive Caster

You gain oath spells at the paladin levels listed.

Hive Spells

Debilitator

When you cast a spell that targets a creature with an attack or a saving throw, but does not deal damage, you may choose to deal 1d8 poison damage per level of the spell to the target if they fail their save against the spell, and half as much on a successful one. If the spell has an attack roll, instead deal this damage on a hit. If the creature is poisoned, this bonus increases to 2d6 poison damage per spell level. Damage dealt this way does not count as spell damage.

Mother Hive

At 14th level, your body becomes a vessel of putrid fungus and bacteria. You no longer need to eat, drink, or breathe. You can squeeze through spaces as wide as 1/10th of an inch without squeezing, and you become immune to the poisoned, frightened, prone, grappled, charmed, and restrained conditions as well as acid damage. 

Icon of Depravity

As an action, you can spend 5 sorcery points to unleash wave of spores, insects, and vermin centered upon you within 60 feet. Choose a spell of fourth level or under on your spell list that deals poison damage, necrotic damage, acid damage, or applies a lasting condition to a creature. Cast that spell against each creature you choose within range.

If a creature within range is already afflicted by a condition when you use this feature, the hive mimics it. Every creature hit by the spells you cast, or that fails their saving throw against this effect within range is also afflicted with that condition.