If you faint zygarde, what happens?

Question

in X I fainted zygarde because I had no false swipe Pokemon and I used the master ball on xerneas. I want zygarde for my team

Answer 1

beat the elite four and come back. he will then reapear.

hope I helped!
source: I managed to kill yveltal

Comments

But Zygarde isn't there before you defeat the Elite Four...

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No, but you can challenge E4 multiple times ;)

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oh, I'mma go back and defeat them again!

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Making Yveltal or Xerneas faint will make them reappear.