Decidium Z

Generation

Generation VII

Description

A Pokémon-specific Z-Crystal associated with Decidueye that upgrades Spirit Shackle into the Z-Move Sinister Arrow Raid.

Generation	Pocket
Generation VII	Z Crystals

Held

Z-Move

Gen VII+

Upgrades Spirit Shackle into the Z-Move Sinister Arrow Raid when held by Decidueye.

USUM

It converts Z-Power into crystals that upgrade Decidueye's Spirit Shackle to an exclusive Z-Move.

It converts Z-Power into crystals that upgrade Decidueye's Spirit Shackle to a Z-Move.

Z-Crystals cannot be removed by item-manipulating effects and prevent Rayquaza from Mega Evolving while held.

Versions	Location	Requirements
M S	Malie Garden Professor Kukui (if the player started with Rowlet)	If the player started with Rowlet
M S	Alola Route 1 Hau (if the player did not start with Rowlet)	If the player did not start with Rowlet
UM US	Malie Garden Professor Kukui (if the player started with Rowlet)	If the player started with Rowlet
UM US	Iki Town Hala (after defeating him in a rematch if the player did not choose Rowlet)	After defeating Hala in a rematch and if the player did not choose Rowlet