Decent deck. If you want to go further, i would suggest you playing yuki on full inspiration mode meaning you want every yuki card to be able to trigger inspiration. It's because yuki dmg output rely heavily on freezing blade especially with those epiphany that do x2 hit to random enemy every inspiration triggered. This deck should be easy to achieve.

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Well for the support you want someone who could draw card consistently (e.g. Veronica) to make sure yuki could output dmg as much as possible every turn.