Ghast

10 feet. A creature entering the aura or starting its turn in the aura must succeed at a DC 16 fortitude save or become Sickened 1 (plus Slowed 1 as long as it's sickened on a critical failure).

While within the aura, the creature takes a -2 circumstance penalty to saves against disease and to recover from the sickened condition. A creature that succeeds at its save is temporarily immune for 1 minute.

Effect: Stench

Requirements The ghast is adjacent to the corpse of a creature that died within the last hour.

Effect The ghast devours a chunk of the corpse and regains 3d6 healing Hit Points.

It can regain Hit Points from any given corpse only once.

Saving Throw DC 16 fortitude

Stage 1 carrier with no ill effect (1 day)

Stage 2 3d8 void damage and regains half as many Hit Points from all healing (1 day)

Stage 3 as stage 2 (1 day)

Stage 4 3d8 void damage and gains no benefit from healing (1 day)

Stage 5 as stage 4 (1 day)

Stage 6 dead, and rises as a Ghast the next midnight

Any living creature hit by a ghast's attack must succeed at a DC 16 fortitude save or become Paralyzed. It can attempt a new save at the end of each of its turns, and the DC cumulatively decreases by 1 on each such save.

The ghast jumps up to half its Speed. This movement doesn't trigger reactions.