So in DarkIntegralGamings newest video (9/6/17) he played Zygard BUS with floges from BKT (The one that says all pokemon's attacks cost 1 less fairy energy). When he used core enforcer, PTCGO did not discard the dark energy he had attached (video link:
). The chat/comments said that because he only had the dark energy attached, he wasn't forced to discard both because both conditions wernt fullfilled. I was wondering if this would be the case in a real tournament.