Z-Crystals

Z-Crystals are a type of held item that allow Pokémon to use powerful Z-moves, a powered up version of the regular move which may only be used once per battle. Physical/Special moves gain a large power increase, and status moves cause stat changes or other boosting effects. Moves, abilities or items like Embargo, Klutz or Trick can't make a Pokémon drop the Z-Crystal that it's holding. There 24 types of Z-Crystals and some are exclusive to certain Pokémon. They can be obtained as Beast Chest loot in Ultra Space, as drops from rare Boss Pokémon or as drops from specific Pokémon. Z-Crystals can also be used to change the type of Arceus.

In order to use z-moves, the player must have a Key Stone equipped (which can be obtained from defeating a mega-evolved boss pokemon or the /megaring command), and their pokemon must be holding a z-crystal corresponding to one of their moves.

List of Type Z-Crystals

Item	Effect	Z-Move
Buginium Z	Converts Bug-type moves into Bug-type Z-Moves	Savage Spin-Out
Darkinium Z	Converts Dark-type moves into Dark-type Z-Moves	Black Hole Eclipse
Dragonium Z	Converts Dragon-type moves into Dragon-type Z-Moves	Devastating Drake
Electrium Z	Converts Electric-type moves into Electric-type Z-Moves	Gigavolt Havoc
Fairium Z	Converts Fairy-type moves into Fairy-type Z-Moves	Twinkle Tackle
Fightinium Z	Converts Fighting-type moves into Fighting-type Z-Moves	All-Out Pummeling
Firium Z	Converts Fire-type moves into Fire-type Z-Moves	Inferno Overdrive
Flyinium Z	Converts Flying-type moves into Flying-type Z-Moves	Supersonic Skystrike
Ghostium Z	Converts Ghost-type moves into Ghost-type Z-Moves	Never-Ending Nightmare
Grassium Z	Converts Grass-type moves into Grass-type Z-Moves	Bloom Doom
Groundium Z	Converts Ground-type moves into Ground-type Z-Moves	Tectonic Rage
Icium Z	Converts Ice-type moves into Ice-type Z-Moves	Subzero Slammer
Normalium Z	Converts Normal-type moves into Normal-type Z-Moves	Breakneck Blitz
Poisonium Z	Converts Poison-type moves into Poison-type Z-Moves	Acid Downpour
Psychium Z	Converts Psychic-type moves into Psychic-type Z-Moves	Shattered Psyche
Rockium Z	Converts Rock-type moves into Rock-type Z-Moves	Continental Crush
Steelium Z	Converts Steel-type moves into Steel-type Z-Moves	Corkscrew Crash
Waterium Z	Converts Water-type moves into Water-type Z-Moves	Hydro Vortex

List of Exclusive Z-Crystals

Item	Effect	Z-Move
Aloraichium Z	Converts Alolan Raichu's Thunderbolt into an exclusive Z-Move	Stoked Sparksurfer
Decidium Z	Converts Decidueye's Spirit Shackle into an exclusive Z-Move	Sinister Arrow Raid
Eevium Z	Converts Eevee's Last Resort into an exclusive Z-Move	Extreme Evoboost
Incinium Z	Converts Incineroar's Darkest Lariat into an exclusive Z-Move	Malicious Moonsault
Kommonium Z	Converts Kommo-o's Clanging Scales into an exclusive Z-Move	Clangorous Soulblaze
Lunalium Z	Converts Lunala's Moongeist Beam into an exclusive Z-Move	Menacing Moonraze Maelstrom
Lycanium Z	Converts Lycanroc's Stone Edge into an exclusive Z-Move	Splintered Stormshards
Marshadium Z	Converts Marshadow's Spectral Thief into an exclusive Z-Move	Soul-Stealing 7-Star Strike
Mewnium Z	Converts Mew's Psychic into an exclusive Z-Move	Genesis Supernova
Mimikium Z	Converts Mimikyu's Play Rough into an exclusive Z-Move	Let's Snuggle Forever
Pikanium Z	Converts Pikachu's Volt Tackle into an exclusive Z-Move	Catastropika
Pikashunium Z	Converts Cap Pikachu's Thunderbolt into an exclusive Z-Move	10,000,000 Volt Thunderbolt
Primarium Z	Converts Primarina's Sparkling Aria into an exclusive Z-Move	Oceanic Operetta
Snorlium Z	Converts Snorlax's Giga Impact into an exclusive Z-Move	Pulverizing Pancake
Solganium Z	Converts Solgaleo's Sunsteel Strike into an exclusive Z-Move	Searing Sunraze Smash
Tapunium Z	Converts Tapus' Nature's Madness into an exclusive Z-Move	Guardian of Alola
Ultranecrozium Z	Turns Necrozma fused with Solgaleo or Lunala into a new form	Light that Burns the Sky

Trivia

• Cap Pikachu is not yet added into the mod.