Kyogre @ choice specs
Evs: 252spatk 252speed 4hp
Moves: water spout, ice beam, thunder, hpground
Why: to set up rain. Also a choice specs waterspout hurts. The ice beam and hpground are to deal with potential threats and thunder is to take advantake of the rain.
Arcius @ splashplate
Evs: 252hp 252spdef 4def
Moves: judgement, recover, toxic, thunder
Why: its judgement becomes water and also its powered up by rain. It has thunder just because of the rain. The tocic and recover combo is ment to give it a defensive element. Its ev spread is ment to turn it into a bulky watertype
Shedinja @ expertbelt
Evs: 252spd 252atk 4spdef
Moves: wilowisp, swordsdance, suckerpunch, exsizzor
Why: shedinja's set of immunities is good for the team in general but shedinja's 1hp does kinda suck I'll admit but it's like my favorite poke and its a good uber cuz entry hazards aren't TOO much of a problem. It knows wilowisp just because basically and swords dance to boost atk while behind a sub passed to it by mew. I decided on suckerpunch cuz of the extra power and exsizzor for stab.
Mew @ leftovers
Evs: 252spd 252hp 4spatck
Moves: sub, agility, batonpass, psyshock
Why: to batton pass speed boosts and substitites to what needs them
Fortress @ leftovers
Evs: 252 hp 252def 4 spdef
Moves: spikes, stealthrock, voltswitch, rapidspin
Why: its a fortress come on
Palkia @ lefrovers
Evs 252atk 252spd 4 def
Moves:waterfall, dragonclaw, raindance, earthquake
Why: its a pretty decent physical attacker and can take abvantage of the rain.