There have been many now-deprecated Genesect events. For a full list, please reference Bulbapedia.
There is one Genesect event — the Fall 2012 "Plasma" one — available in present day through the DNS Exploit in Black 2 and White 2, which uses fan-hosted servers to access old Mystery Gifts. For help with setting up the exploit, reference our detailed guide. A Genesect obtained through this method is legitimate and will pass hack checks.
It has not been revealed when the Genesect event is yet.
