Contagion

Spell Lists: Cleric, Druid
5th-level necromancy
Casting Time: 1 Action
Range: Touch
Component: V, S
Duration: Instantaneous

Your touch inflicts disease. Make a melee spell attack against a creature within your reach. On a hit, the target is afflicted with one of the diseases listed below (your choice). The spell has no effect on constructs, undead, or creatures immune to nonmagical diseases.

At the end of each of the target's turns, they must make another constitution saving throw. If they succeed on the saving throw, they suffer no effects from the disease until the end of their next turn. When the target has succeed on three of these saving throws, they are no longer diseased. When they have failed on three of these saving throws, the disease sets in, and lasts for 7 days unless treated by an appropriate means. The disease is natural, not magical, and any effect that removes a disease or otherwise ameliorates a disease's effects apply to it. Once they have either succeeded or failed three of these saving throws, they stop making saves for this spell.
- Muscle Weakness. The creatures arms become unbearably weak. They have disadvantage on Strength checks, Strength saving throws, and attack rolls that use Strength. Their attacks using Strength deal half damage.
- Skinslough. The creature's skin becomes paper thin and causes agonizing pain when it tears. They have disadvantage on Constitution checks, Constitution saving throws except those caused by this spell. In addition, when the creature takes damage, its movement speed is reduced to 10 feet until the end of its next turn.
- Mindrot. The creature becomes disoriented and confused. They have disadvantage on Intelligence checks, Intelligence saving throws and cannot tell friend from foe in combat.
- Fire-eyes Fever. The creature's eyes turn milky white and are searingly painful. They have disadvantage on Wisdom checks, Wisdom saving throws and are blinded.
- Flesh Rot. The creature's flesh decays. They have disadvantage on Charisma checks, Charisma saving throws and take 5 additional points of damage when they suffer physical damage.