Zarel/Pokemon-Showdown — pull request #228 by Joimer (2013-05-16 18:12:11+00:00)
Title: Allow Meloetta-P and Keldeo-R in Hackmons

The Meloetta-P and Keldeo-R formes are usable at any time in cartrdige games with just a fake GTS and no hacking is required, so they meet the criteria for Hackmons. Thus, Hackmons is using its own new "Hackmon" rule to meet this criteria.