One think to check before suggesting a mon, is what threats are dangerous for our 5-man team, and if a sole poke can cover the most important of them. For example if we go for Pocket's Deoxys-D, then SD Terrakion, RP Genesect, any Volcarona, CM Keldeo, Garchomp, DD Gyarados and Sandslash in sand (yeah don't laugh, because as of now it can sweep the whole team with one SD under his belt) all become very huge threats. Can we cover most of them in the last slot? The answer is of 'course no. The problem with Deoxys-D, is that he can get set-up on by many faster pokes, and because we have no scarfers or strong priority, not even very fast pokes (SD Garchomp sweeps us), one turn of set-up could very well mean gg. My opinion is that we should find something that leaves little to zero set-up room, while also having SR, which is a must and i don't want us to be forced to use it in our last mon, as this would limit us greatly.