Thank you for making a bug report!
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Regarding Go, please make sure that it is effect damage, not paying life points for cost. Go also only prevents effect damage once per turn. So after you choose to not take effect damage once, it will no longer prevent damage for the rest of the turn. The card is written in a weird way, but this is evident from the last line of the scale effect, “You can only use each effect” which implies that both effects are separate and the first is not continuous.
If you can fix the paste bin link, I’ll be able to help you further.
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