Level 21 DiseaseMummy Rot

This disease, delivered by the attack of a mummy, fills the lungs of its victims with dust, making it progressively harder for them to breathe.

Stage 0: The target recovers from the disease.
Stage 1: Initial Effect: The target regains only half the normal number of hit points from healing effects.
Stage 2: The target regains only half the normal number of hit points from healing effects. In addition, the target takes 10 necrotic damage, which cannot be healed until the target is cured of the disease.
Stage 3: Final State: The target dies.
Check: At the end of each extended rest, the target makes an Endurance check if it is at stage 1 or 2.
9 + two-thirds mummy’s level or lower: The stage of the disease increases by one.
10 + two-thirds mummy’s level-14 + two-thirds mummy’s level: No Change
15 + two-thirds mummy’s level or higher: The stage of the disease decreases by one.

Published in Draconomicon: Metallic Dragons, page(s) 142, Dungeon Master's Guide, page(s) 49, Open Grave, page(s) 95.