Stratos
Banned deucer.
Out of curiosity, would you really rather have 548 Atk and 238 Def than 656 Atk and 436 Def? Both are obtainable by Regirock with 252 HP EVs and one turn of setup-the former being Power Trick and the latter being SD. The difference being you can use Power Trick again to go back to 236 Atk and 548 Def, while you can use SD again to... go to 984 atk and 436 Def. Power Trick will always be shit.If you notice something about PT, all of its users are either slow or the move is irrelevant to them (Alakazam, Gliscor). If we were to build around Power Trick with a fast Pokemon with divergent AND useful Attack / Defense stats (an example of this concept would be Regirock, which maxes at 548 with Max Defense+ and has 236 Attack unboosted. In Regirock's case, PT WOULD be better than Swords Dance if it used its EVs for a wall set, and even after PT it would still have respectable defense). The question would be, what would make us want to use it, and I think the answer is support for the two different functions. It would also be intriguing because even with the "bad swords dance" element, it allows us to take a lot more liberties with the design. Almost no Pokemon that has a defense as high as Regirock or Steelix uses Max+, but with Power Trick there's an incentive to do that. It make physical walling viable while also allowing our Pokemon a unique stat-altering move.
The cool thing about Power Trick is that it's permanent until the next use or a switch out, meaning it can be advantageous to *toggle back* in some circumstances. Recovery moves and priority moves could be built around the concept of Power Trick's mechanical toggle.
To pay attention to the positives instead of the negatives here, i'd like to again rally support for Explosion. It's not gimmicky, as it has the same level of opponent control as ice punch (albeit you don't like your opponent switching into a ghost on your boom), it's rare, yet has the potential to be great, it sets a not-stupidly-vague direction for our CAP, and we know we can make a Pokemon that won't ditch it for better options. And, as scoopapa said, it will allow us to explore a variety of other things in our last Gen V CAP such as how to make an effective suicide poke and what role one would perform (since it'll likely not be as simple as the Taunt/SR/STAB/Boom@Sash days of old). Final gambit sux tho bc you have to use it at full hp from a high base, let's not.
i have reservations about Doom Desire mostly because we don't know that it'd be used; we'd have to tailor our movepool very carefully to make sure we don't become sweeper/wall/supporter who doesn't use it at all, and one wrong move will screw us. That said, if i can't get people to rally behind explosion, it seems like we'll be working with doom desire, and that is my next choice.