First attempt at a set, hopefully this is a good one.
QC Approvals (0/3):
GP Approvals (0/2):
-----------------------------------
Hey Spongebob, what do you want to do today?
[SET]
name: Analytic Tank
move 1: Cosmic Power
move 2: Hydro Pump / Surf / Ice Beam
move 3: Thunderbolt / Thunder
move 4: Recover / Ice Beam
item: Life Orb / Leftovers
ability: Analytic
nature: Quiet
evs: 252 HP / 252 SpA / 4 SpD
ivs: 0 Spe
Why this set deserves to be on-site:
Additional Comments:
Teammates and Counters:
QC Approvals (0/3):
GP Approvals (0/2):
-----------------------------------

Hey Spongebob, what do you want to do today?
[SET]
name: Analytic Tank
move 1: Cosmic Power
move 2: Hydro Pump / Surf / Ice Beam
move 3: Thunderbolt / Thunder
move 4: Recover / Ice Beam
item: Life Orb / Leftovers
ability: Analytic
nature: Quiet
evs: 252 HP / 252 SpA / 4 SpD
ivs: 0 Spe
Why this set deserves to be on-site:
- Unlike other Starmie sets, which are hit-and-run style, this set is much more defensive.
- In a meta-game dominated by fast, fragile sweepers and revenge killers, Analytic stands out as a great ability to defeat them.
- Analytic is often an overlooked ability on Starmie due to it's fragile stat distribution. However, Starmie has two things that make it viable defensively. One is it's decent defensive typing; the other is Cosmic Power. Cosmic Power boosts it's defenses significantly, making it a viable tank.
- It's high base speed can be compensated for with a negative nature and 0 Speed IVs.
- With a boost from Analytic and a Life Orb, Starmie has slightly more power than Timid Choice Specs Latios!
- The major drawback to Analytic is Starmie's new-found vulnerability to status, but this can be compensated for.
Additional Comments:
- This set is specifically for destroying faster, offensive opponents. Trying to breaking through walls is generally a bad idea, as Starmie will often end up with a status infliction.
- The best time to set up Cosmic Powers is once the opponent's defensive core has been weakened (or if one never existed in the first place), and any Toxic users are down / can't switch in.
- The Analytic boost is gained against any Pokemon faster than neutral, uninvested base 85's.
- Cosmic Power is the crux of the set. Hydro Pump and Thunderbolt are the main attacking options, but Hydro Pump can be replaced with Surf for better accuracy, or Ice Beam for BoltBeam coverage. Ice Beam can also be used in place of Recover, but this significantly reduces Starmie's durability. Thunder is viable in place of Thunderbolt if Starmie is being used in Rain.
- Leftovers can be used instead of a Life Orb, but the power drop is noticeable, and Recover heals off the damage anyway. May be preferable if Ice beam is used over Recover.
- The EVs, IVs, and nature maximize it's attack, while increasing it's bulk and minimizing it's speed.
- A notable feature of Starmie is it's ability to take on the common fighting types in the tier, most notably Terrakion.
Teammates and Counters:
- Starmie loves Drizzle Politoed, as it's rain powers up Starmie's STAB and gives Thunder perfect accuracy.
- This set is designed to counter Offensive Pokemon, and has trouble getting through dedicated walls; this makes a wall/stall-breaker an effective partner. Breloom is a good choice, as they cover each other's weaknesses pretty well, and both appreciate rain support. Breloom also hits Tyranitar, Scizor, and Ferrothorn hard, both of which are major pains for Starmie.
- Magnezone traps troublesome steel types like Ferrothorn and Scizor. Fire types in general are good for eliminating Steels, although this is better if Starmie isn't on a Rain team. Fighting types are also good for this, and can function effectively in Rain.
- Without Natural Cure, Starmie hates Toxic. This makes a cleric, such as Blissey or Chansey, very appealing. Keep in mind, Chansey appreciates Rain more than Blissey, as it's vulnerable to Sandstorm.
- Toxic Spikes can mess Starmie up pretty badly. A Rapid Spinner or grounded Poison type can remove / absorb Toxic Spikes, respectively. Tentacruel appreciates Rain and absorbs Toxic Spikes + Rapid Spins. Forretress and Donphan may be good choices too, depending on the team.
- Burns and Poison can be helpful if Starmie needs to Recover stall. The Blissey and Chansey are good Toxic users, and can provide cleric support, as mentioned above. Heatran, Jellicent, or any bulky Water-type can Burn opponents.