Starmie @ Life Orb
MODEST
Illuminate
EVs: 216 Spe / 252 SpA / 40 Hp
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Skill Swap
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Substitute / Psychic
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Ice Beam / Toxic / Thunderbolt
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Surf
Skill Swap is a move rarely used or seen, so I decided to make a weird set using it. This primarily is used to counter Electivire.
Starmie's signature ability is Natural Cure. Illuminate has never been, and never will, be considered in any sort of competitive play. Ever. The ability does NOTHING, has NO specialty (except in the in-game) and is as useless as Forry's Sturdy. The purpose of this set, and you might have guessed by now, is to swap your ability with a foe who has a favorable one.
Hp hits 269, which is a Life Orb number. Speed hits 320 and SpA 328.
The second move slot can be used to Sub or for a Psychic. Substitute is definitely essential on a predicted switch, but Psychic can take care of Breloom and Gengar.
Ice Beam provides excellent coverage against bulky Grounds like Gliscor (OHKO), Donphan (does 97%+), 2HKOs Hippowdon, Bulkymence (OHKO), 252HP Dragonite (OHKO), 48Hp Breloom (OHKO), and Dugtrio. Surf is STAB and takes care of Heatran and friends.
Skill Swap is, however, always fun to use. If you know your foe has an Electivire, switch in on Starmie, swap your skill and get the Motor Drive boost. Starmie can then hopefully try a sweep. The same applies for Jolteon, although you regain health instead of speed.