By theSLAYERIn Pokemon Crystal, lies an event encounter whereby users get to challenge, and potentially capture,
the Mythical Celebi.
In the Japanese versions of Pokemon Crystal, this encounter required the usage of the Mobile Communication Device.
As Pokemon Crystal is not released for Virtual Console at this point,
THIS POKEMON WILL NOT BE LEGAL WITH ANY VIRTUAL CONSOLE RELEASE
(AND BY EXTENSION, CANNOT BE LEGITIMATELY TRANSFERRED TO GEN 7 AND ONWARDS).