In the core series games
US UM N/A
Can create Ultranecrozium Z held items for the player's Pokémon.
This section is incomplete. Please feel free to edit this section to add missing information and complete it. Reason: Can a Pokémon other than Necrozma that is transformed into an Ultra Necrozma use the Z-Move Light That Burns the Sky even if it does not hold an Ultranecrozium Z?.
Necrozma to transform into Ultra Necrozma after using Ultra Burst and upgrades its Photon Geyser into the special Z-Move Light That Burns the Sky.
A Pokémon transformed into Ultra Necrozma cannot use any other Z-Move than Light that Burns the Sky, even if holding the appropriate Z-Crystal.
Unaffected by item negating effects (such as
Embargo and Klutz). Item manipulating effects (such as Trick and Fling) cannot remove a Z-Crystal from a Pokémon.
Rayquaza cannot Mega Evolve if it holds a Z-Crystal.
Outside of battle
A held Ultranecrozium Z is automatically removed if the Pokémon is
traded between players.
US UM It's a crystal that turns Necrozma fused with Solgaleo or Lunala into a new form.
US UM This is a crystallized form of Z-Power. It upgrades Necrozma's Photon Geyser to a Z-Move.
This is artwork of the Ultranecrozium Z as seen on the official
Pokémon Global Link.
In other languages
Gaugihk Noihhāklok Z
究極奈克洛Ｚ / 究极奈克洛Ｚ
Jiūjí Nàikèluò Z
Ультранекрозиум Z Ul'tranekrozium Z