Never-Ending Nightmare (Special) is a Ghost-type Z-Move with variable power and 101% accuracy. This move is created by equipping a Ghostium Z to a Pokémon that knows a damaging Ghost-type move. The power of Never-Ending Nightmare depends on the base move's power; for example, a move like Shadow Ball translates to a more powerful Z-Move than one like Night Shade. This powerful attack hits through Protect with reduced damage and is often used to deliver a decisive blow in battle, making it popular in competitive play for its ability to turn the tide of a match.