Can Leblanc legend copy a reflection token?

Yes. Deceiver's reflexive trigger only requires "another unit there," and a Reflection token is a unit, so it's a legal copy target (FAQ #9938, #10078).

One wrinkle: copy effects only see copyable traits, so if the Reflection you copy is already a copy of something else, your new token becomes a copy of that original card's printed stats and rules text — copy copy copy (Core Rules 2026-07-16, Rule 374/375 area, plus the 2026-03-30 copy-effect clarifications). And the Temporary comes from Deceiver's own text, not from the copied unit, so the new token gets it regardless.