Shadow Force to be deslashed and put into AC? Or should it stay slashed? Right now, it's slashed. Shadow Force DOES have obscene power though... It's still used a fair bit according to Moveset Analysis.
Ok just to clear this up BEFORE you start writing, the reason why Shadow Force should be even considered over Shadow Claw is NOT because of the humongous power boost, nay. Unless your using it with Power Herb, Shadow Force's MAIN USE IS TO TAKE THAT EXTRA POISON TURN AND TAKE ADVANTAGE OF TOXIC SPIKES.
It allows Arceus to evade a WoW from Gira-a, then strike back after its taken a tad bit of residual damage, which can actually be lethal, if toxic spikes aren't present Gira-a GAINS Leftovers instead, Lugia can Reflect. If its going in AC make sure you mention that, because I have a feeling that everyone forgot that -_-. Also emphasize in AC that one Shadow Force is weaker then two Shadow Claws, warn of using it at all costs unless you have Toxic Spikes support. <- Yes I just rewrote the same statement twice in different words and bolded it, ITS THAT IMPORTANT.
Also mention Kabutops and Omastar as checks to the ExtremeKiller set since they can come in to Extremekiller as it Swords Dances, and then OHKO it next turn with a Superpower / Low Kick (Kabutops) and Hydro Pump (Omastar). Both of them don't really care about ExtremeSpeed due to respectable defenses and a resist given courtesy of typing, and they outspeed due to swift swim :D. I normally wouldn't bother to mention these things but if we are mentioning things like Gengar...... yeah...
EDIT: TO THE POST BELOW MINE, two Shadow Claws already have greater power then a Shadow Force, so really those calcs are slightly unimportant. The only important one is the wobba one, the others, Arceus can just shadow claw twice and not risk hitting Chansey instead. Lugia sets up reflect anyway on the turn it dissapears (lol).
EDIT2: DIRECTED TO THE EDIT OF THE POST BELOW MINE, well after Gira-a gets that one turn of leftovers its no longer always OHKOed :(, and like I said Lugia can Reflect. So those calcs are a bit iffy too :(.
Concerning Gengar, I would be inclined to agree with you. Gengar is not exactly the ideal Pokemon to use in Ubers.
BEST EUPHEMISM ever <- do not read with Sardonic tone, that literally was THE BEST EUPHEMISM EVER :D. In other words, this is a compliment, not an offensive statement.
EDIT 3: It won't even always OHKO Gira-a after lefties and rocks all the time. That and the chances of it landing are slim.
Also a reply to you :P
EDIT 4: Yeah the comments are fine now :P. EDIT WARS are fun, although I think people are going wth is this lol. Thanks for the color info :D, yes I was R-spin.