Ultra Necrozma is a further transformation of Dusk Mane Necrozma or Dawn Wings Necrozma, the forms that Necrozma takes when it captures Solgaleo or Lunala in Pokémon Ultra Sun and Ultra Moon. It is a new form that even Necrozma had never taken until now. It has been discovered for the first time in the form of this dragon brimming with light. Ultra Necrozma’s body is made of the light energy it has absorbed from Solgaleo or Lunala and taken into itself. Its temperature reaches over 10,000 degrees Fahrenheit.
Necrozma is able to shoot laser beams from every part of its body, burning through anything. These laser beams can reach distances over 18 miles away. While swinging its four wings around, it tears opponents to shreds with its claws. The areas that are sliced with these claws melt due to the high heat.
Major Changes for Ultra Necrozma!
It’s been discovered that Necrozma changes its form to Ultra Necrozma thanks to a phenomenon known as Ultra Burst. But it’s not only Necrozma’s appearance that changes thanks to its Ultra Burst. When it becomes Ultra Necrozma, it becomes Psychic and Dragon type. And its stats are raised to astounding heights, some exceeding those of other Legendary Pokémon seen before now.
Ultra Necrozma has powerful enough stats on its own, but its attacking power is heightened even further by its Neuroforce Ability. Only Ultra Necrozma has this Ability, and it boosts the damage dealt whenever Ultra Necrozma uses a supereffective move on an opponent. Necrozma—which can learn powerful moves of many different types, such as Photon Geyser, Sunsteel Strike, and Moongeist Beam—will be able to pull off even more overwhelming attacks because it has this Ability!
Ultra Necrozma’s Exclusive Z-Move!
Light That Burns the Sky is a Psychic-type Z-Move that Ultra Necrozma can unleash if it knows Photon Geyser. Only Ultra Necrozma can use it. Ultra Necrozma gathers together light energy until it can accumulate no more—then unleashes it all! You’ll want to experience the force of this full-powered attack for yourself.
The very land quakes from the tremendous destructive power of Light That Burns the Sky! Just as is true for Photon Geyser, this move also deals damage based on whether the user’s Attack or Sp. Atk stat is higher!
Necrozma Changes Using Ultra Burst!
Having Dusk Mane Necrozma or Dawn Wings Necrozma hold the new Z-Crystal Ultranecrozium Z will allow them to trigger Ultra Burst in battle. Press the Ultra Burst button in battle to witness the appearance that Ultra Necrozma takes on as it becomes a dragon shining with light!
Source: Official Pokémon website
Pokémon Blog 
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