If a reflection token copies a non-token unit, it stops being a token. If you gust it, it turns back into a token again, or it swaps back to being a token?

No, the premise is wrong — a Reflection token never stops being a token, even after copying a non-token unit.

A Reflection token is fundamentally a token game object (Rule 182: "Tokens are not cards"). Copy effects only copy "copyable traits" — printed Might, Rules Text, tags — not the object's fundamental identity as a token (Patch Notes 2026-03-30). The Reflection remains a token unit on the board regardless of what it copies. FAQs #10140 and #9732 confirm this: Azir can still move them because they're still token units.

So when you Gust a Reflection token that's copied a non-token unit, it gets returned to hand — and then immediately ceases to exist per Rule 183.1 ("If a token is put into any Non-Board Zone besides the chain, it ceases to exist immediately after moving to its new zone"). It doesn't "turn back into a token" — it was always one, and now it's gone.