Nihil Light deals damage and ignores anystat changes affecting its targets. It also bypassesFairy-typePokémon's immunity toDragon-typemoves, dealing neutral damage; if used on a dual-type Pokémon that has Fairy as one of its types, the damage calculation will take into account only the other type (e.g., a dual-type Fairy/Dragon Pokémon will be treated only as Dragon-type, and Nihil Light will be super effective).
The user attacks by unleashing a powerful light that defies all laws of nature, striking even Fairy types and ignoring any stat changes affecting its targets.
Learnset
Special move
IfZygarde Complete Forme knowsCore Enforcer, for the duration that itMega Evolves into Mega Zygarde, Core Enforcer will become Nihil Light.
Bold indicates a Pokémon gainsSTAB from this move. Italics indicates a Pokémon whose Evolution or alternate form receives STAB from this move. A dash (−) indicates a Pokémon cannot learn the move by the designated method. An empty cell indicates a Pokémon that is unavailable in that game/generation.
Trivia
Nihil is Latin for "nothing". Altogether, the move's name may be a corruption of "annihilate".
The Japanese name of Nihil Light useskanji, which is similar to some Pokémon-specific Z-Moves.
This move is similar toLight That Burns the Sky specifically, which can be only used afterNecrozma undergoesUltra Burst, much like how Zygarde needs to Mega Evolve in order to use Nihil Light.
References
↑L:"And now that I think of it... The moves that Zygarde used when it Mega Evolved—they reminded me of Z-Moves, like those used in theAlolaregion." (Pokémon Legends: Z-A)