It's probably not a hack. I mean, if it were, there should be a lot more awesome things in there than a lone Darkrai and a shiny Deoxys. 

I'm currently working on throwing together a functioning team. Snorlax is usually the backbone of any team I build, because I love him, backed up by a Spinda, Ursaring on fire, and an imposter ditto, he'll wreak havoc any day!.. That is, if your definition of "wreak havoc" means sleeping through the barrage of blows the enemy delivers..

Your Aerodactyl sounds rad.