I really like the Spec Arceus Idea. And please DON'T build a Stall team, it's just too boring.
Actually, if we don't do Deoxys-A, then we should do either Darkrai or Mewtwo(BUT ONLY IF ITS LO -________-) ; it's always so fun to build a team around these super-offensive pokemon.
A Salamence + Rayquaza combo team is definitely worth trying for this project. It isn't just something you can easily build but it is indeed effective.
Yeah max Speed isn't necessary but I'm a bit too lazy to tweak the EVs :p. I'm sure there's a better one out there.
Jibaku said:Psycho Boost solidly OHKOes 4 / 0 Reshiram and Palkia (two things that its other moves can't cover), Naughty Giratina-O (Lonely variants still take ~93% min), and max HP Groudon. The killer attack also does 80%-94.6% to Max HP Arceus, 77%-91% to max HP Kyogre, and 70%-82% to 248 HP Ho-Oh and Giratina-A (this guy takes a bit more). Even resisting Pokemon can fall to the might of Psycho Boost. SpDef Forretress takes 57.6%-68% from LO Psycho Boost, putting him into Superpower kill range with Stealth Rock down. 252 HP Dialga takes 51.5% minimum, Max/Max+ Ferrothorn eats a respectable 38%-45%, and 4/0 Mewtwo gets badly dented with 64.6%-76% damage. This means that without a Dark-type Pokemon (Darkceus, TTar, Darkrai, who all despise Superpower), Chansey/Blissey (Superpower), or a specially bulky Psychic resist (or quad resist), Deoxys-A can easily throw out a Psycho Boost and horribly dent someone.
Aren't most of the Pokemon you listed outsped by Deoxys-A and finished off by Extremespeed if they switch into Psychic (especially with SR down)?