Level 4 DiseaseWhispering Madness

Horrid whispers test your sanity and begin to devour it.

Stage 0: The only way to reach this stage, and thereby end the disease, is to destroy the creature that infected the target.
Stage 1: While affected by stage 1, the target loses a healing surge. If the target takes damage from a single source equal to or greater than its Intelligence score, it must make a saving throw at the end of that encounter. If the saving throw fails, the stage increases by 1.
Stage 2: While affected by stage 2, as above. In addition, the target grants combat advantage whenever it is adjacent to two or more creatures.
Stage 3: While affected by stage 3, as above. In addition, while bloodied, the target must make a basic attack as a free action against the nearest creature at the start of each of its turns.
Stage 4: While affected by stage 4, as above. In addition, the target takes a -2 penalty to all defenses against the attacks of aberrant creatures and a -2 penalty to saving throws to end effects caused by aberrant creatures. The target also deals 1d6 extra fire damage with its attacks while bloodied.
Stage 5: While affected by stage 5, the target is dominated by the creature that infected it and receives telepathic instructions from that creature. The target also gains resist 5 fire.
Check: At the end of each extended rest, the target makes an Arcana or Insight check if it is at stage 1 or 2.
9 or lower: The stage of the disease increases by one.
10-13: No Change
14 or higher: The stage of the disease decreases by one.

Published in Dungeon Magazine 195.