I make a Reflection token on a unit with plus might counters on it. Does the Reflection also get the might counters?

No, your Reflection token does not inherit those might counters.

According to the Patch Notes (2026-03-30) regarding copy effects, reflection tokens only copy the "copyable traits" of a unit, which are defined as the printed or copied traits (including its Rules Text).

As clarified in RiftJudge FAQ #9410 and FAQ #9689, "Nothing appended or granted will be seen by the copy effect." Since might buffs or counters are appended or granted to a unit, they are not copyable traits and are not inherited by the Reflection token.