Just thought I’d post this here to get some discussion going, since the trick is obviously a bug and not intended, and will likely be fixed.
Here’s the bug in question: https://www.reddit.com/r/ffxiv/comments/5vibu9/35_dissipation_trick_sch_opener/
tl;dr - You can have both a fairy and Dissipation up at the same time, which is obviously unintended.
I made a GM Ticket in-game and the reply was: http://i.imgur.com/u2aFzkx.png
“We advise against using this bug in competitive raid content or PvP, as it will give you an unfair advantage. Thank you for your understanding.”
Personally don’t care much for it, but for consistencys sake parses using it should probably be removed from rankings, which really sucks since most of the top parses rely so heavily on good AST draws more than anything else.