Finally suspecting eternatus. if you ban anything, ban eternatus, not zacian. crowned zamazenta is also an option to be banned as it can behemoth bash zacian and can stop something like haxorus with mewtwonite x or diancite dragapult. (NOTE: the above statement is untested)Coming through with a couple more tiering things:
We have decided to re-ban Moody. Moody was freed due to no longer boosting evasion this gen, however it still remains a skill-less strategy which is capable of taking most of the meta down based on luck with boosts. This replay serves as an example of how Glalie can break through attempted checks with the right boosts.
Tagging The Immortal
Secondly, we're suspecting Eternatus. Details can be found here https://www.smogon.com/forums/threads/mix-and-mega-suspect-1-eternatus.3658002/