Most frequently, I'd win a pack or two from beating Arc, then open packs as quickly as possible. Usually there's the pack I won, then a basic pack, then an energy pack, and it keeps reopening packs. Sometimes I insert a code to win more packs before doing so, which also causes there to be a *load* of packs. I'm going to play again tonight, so if I run into it again, I'll take better notes.