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>Run scarf magnezone so you can outspeed celesteela
>The best you can do is Volt Switch to avoid EQ, letting you do like 40% to most celesteela (or break their sub)
>Hope that your EQ-immune, Fireblast-resisting mon is still alive
>This is your Celesteela """""counter"""""
It's a good way of dealing some damage, and it shits on Ferrothorn/Toxapex cores as a bonus, but it's hardly a true counter. Tapu Koko is really necessary to give Zone the damage to kill Celesteela, and you're maybe better off just setting up an electric-type Porygon Z rather than spending two slots on Zone/Koko.