Moongeist Beam is a Ghost-type move with 100 power and 100% accuracy. Introduced in Pokémon Sun and Moon, it is the signature move of the Legendary Pokémon Lunala. Moongeist Beam is notable for ignoring the target's abilities during damage calculation, allowing it to bypass abilities that would typically negate or reduce damage, such as Sturdy, Multiscale, and Wonder Guard. This makes it particularly effective against targets that rely on such abilities for survival. The move's combination of high power and ability-negating effects make it a formidable choice in competitive battles.