If you want to know how to get Pokemon Sun and Moon Eevium Z then you have come to the right place. First things first, you need to beat the game in order to get the Eevium Z. So you have to do the storyline and defeat the elite four before you can get the Eevium Z.
Pokemon Sun and Moon Evium Z and Eevee Z Crystal Guide
For those who do not know Eevium Z allows you to unlock the special Evee Z move. This is no easy task and will take some time but considering that you have already finished the game, follow these steps and you should have that Eevium Z in no time.
With the Charizard glide, make your way to the battle royal avenue. Once here you have to go to she store where you are offered discounts for no reason. Go to the first cashier at the store. You will then interact with the cashier and he will give you a quest.
He will tell you to defeat 8 trainers in total. That is the long part of the quest. The cashier will even give you an idea of where these people will be located in order to make things simpler. Now you have to go to each one of these trainers and beat them in order to get the Eevium Z.
Once you have beaten all 8 trainers, come back to the cashier who gave you the quest in the first place and talk to him. After you have told him about your quest he will request to battle you. You will need to battle him as well. This is the final battle.
Once you have defeated the cashier he will give you the Eevium Z. With the Evee Z crystal, you can now unlock the special Evee Z ability.
This is all we have on our Pokemon Sun and Moon Evium Z and Eevee Z Crystal Guide. Hope that this guide was useful.