I recently went through wowprogress to see what people did to get AP, most people seem to get it from M+ but this one guy on #3 somehow managed to get 2,8billion AP not doing a SINGLE mythic+ only clearing NH HC 3 times total and killing 5 different NH mythic bosses (9 mythic kills in total) and has no rank in arena, how? I would really like to know how. My best guess is Skirmish arenas but how is that even possible?