Doctor Kelleflump's Deadly Demon (abbreviated as DKDD) is a offensive spell that summons a powerful demon to attack the target.

 

Black amulets only protect against damage from the demon AFTER a successful cast and are not a required component any more.

The damage they can still absorb is proportional to their octarine level. You can wear two amulets to have the second one absorb damage when the first one fails.

Damage from a spell failure is NOT buffered by the black amulet, so beware if you are weak in the methods!