| Type | ghost | 
| Category | Special | 
| Power | 100 | 
| Accuracy | 100 | 
| PP | 5 | 
| Introduced | Generation 7 | 
Ignores the target's ability.
When a Pokémon is holding Ghostium Z and uses its Z-Power, Moongeist Beam turns into Never-Ending Nightmare and has base power 180.
When Lunala or Dawn Wings Necrozma is holding Lunalium Z and uses its Z-Power, Moongeist Beam turns into Menacing Moonraze Maelstrom and has base power 200.
| Sun Moon Ultra Sun Ultra Moon | The user emits a sinister ray to attack the target. This move can be used on the target regardless of its Abilities. | 
| Sword Shield | The user emits a sinister ray to attack the target. This move can be used on the target regardless of its Abilities. | 
| B.Diamond S.Pearl | This move can’t be used. It’s recommended that this move is forgotten. Once forgotten, this move can’t be remembered. | 
| English | Moongeist Beam | 
|---|---|
| Spanish | Rayo Umbrío | 
| Italian | Raggio d'Ombra | 
| Japanese | シャドーレイ (Shadow Ray) | 
| German | Schattenstrahl | 
| French | Rayon Spectral |