Franky wrote this entire thing; I'm just passing it through grammar and whatnot.
Status: Needs grammar checks.
www.smogon.com/dp/pokemon/alakazam
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[SET]
name: Calm Mind
move 1: Calm Mind
move 2: Psychic
move 3: Focus Blast
move 4: Shadow Ball / Signal Beam / Grass Knot
item: Life Orb
ability: Synchronize
nature: Timid
evs: 4 HP / 252 SpA / 252 Spe
[SET COMMENTS]
<p>This set utilizes Calm Mind to blast Alakazam's already-high Special Attack stat through the roof. The best way to pull off a successful sweep with this set is to reveal it later in the match once every member of your opponent's team has been revealed. This way, Alakazam can avoid being easily trapped by the likes of Spiritomb. Psychic is essentially a given on this set since it provides STAB, while Focus Blast lets Alakazam deal heavy damage to the most prominent special walls in the tier: Chansey and Registeel. With a single Calm Mind boost, Focus Blast deals 83% - 97.8% to Registeel, while Chansey takes 56.8% - 67.1%. The final slot boils down to what Pokemon you need Alakazam to hit. Shadow Ball strikes Mismagius and Spiritomb for heavy damage, while Signal Beam can reliably finish off weakened Dark-types instead of relying on the inaccurate Focus Blast. In addition to this, Signal Beam and Shadow Ball allow Alakazam to hit bulky Psychic-types like Uxie and Slowking for super effective damage. Grass Knot can be used in the final slot if inflicting high damage on Milotic and Spiritomb is more important.</p>
[ADDITIONAL COMMENTS]
<p>Substitute is an option to protect Alakazam from priority moves and Pursuit. It can also guard Alakazam from status and critical hits that may interfere with Calm Mind. However, if you opt for Substitute, then Alakazam will have less coverage. For coverage, Signal Beam deals with Dark-types like Spiritomb, but leaves Alakazam completely helpless against Registeel, Steelix, and Chansey. Focus Blast is the inverse of the aforementioned problem: Alakazam is able to deal significant damage to Registeel and Steelix, but is essentially a sitting duck against Spiritomb.</p>
<p>Spikes support is absolutely necessary in order to make this set even more deadly. With two layers of Spikes down, Alakazam can secure the OHKO on Registeel and the 2HKO on Chansey with a boosted Focus Blast. Offensively, Cloyster fits the bill as a Spikes supporter thanks to its ability to threaten opposing Pokemon with Explosion and check Swellow with Ice Shard.</p>
<p>Spiritomb will immediately present a problem to this set since it has the ability to lock down Alakazam with Pursuit, Shadow Sneak, or Sucker Punch. It is highly recommended that you remove Spiritomb from the match before attempting a sweep; as such, using Blaziken or Houndoom alongside Alakazam can be quite beneficial since they can easily switch into Dark- and Ghost-type attacks. As an added bonus, Houndoom will often lure in Chansey, and a boosted Fire Blast can take a sizable chunk of its precious HP. This ultimately gives Alakazam one less problem when it's attempting to sweep late-game.</p>
Status: Needs grammar checks.

www.smogon.com/dp/pokemon/alakazam
QC found that the Sub + CM was not strong enough, but in my opinion, Substitute is actually a strong move in this set due to the amount of priority and pursuit flying around. However, the QC team found that a CM + 3 attacks is much better. Substitute now has its own paragraph in the AC section since I had a lot of experience with it. A lot of the material has already been written, but I added a lot of new wording.
[SET]
name: Calm Mind
move 1: Calm Mind
move 2: Psychic
move 3: Focus Blast
move 4: Shadow Ball / Signal Beam / Grass Knot
item: Life Orb
ability: Synchronize
nature: Timid
evs: 4 HP / 252 SpA / 252 Spe
[SET COMMENTS]
<p>This set utilizes Calm Mind to blast Alakazam's already-high Special Attack stat through the roof. The best way to pull off a successful sweep with this set is to reveal it later in the match once every member of your opponent's team has been revealed. This way, Alakazam can avoid being easily trapped by the likes of Spiritomb. Psychic is essentially a given on this set since it provides STAB, while Focus Blast lets Alakazam deal heavy damage to the most prominent special walls in the tier: Chansey and Registeel. With a single Calm Mind boost, Focus Blast deals 83% - 97.8% to Registeel, while Chansey takes 56.8% - 67.1%. The final slot boils down to what Pokemon you need Alakazam to hit. Shadow Ball strikes Mismagius and Spiritomb for heavy damage, while Signal Beam can reliably finish off weakened Dark-types instead of relying on the inaccurate Focus Blast. In addition to this, Signal Beam and Shadow Ball allow Alakazam to hit bulky Psychic-types like Uxie and Slowking for super effective damage. Grass Knot can be used in the final slot if inflicting high damage on Milotic and Spiritomb is more important.</p>
[ADDITIONAL COMMENTS]
<p>Substitute is an option to protect Alakazam from priority moves and Pursuit. It can also guard Alakazam from status and critical hits that may interfere with Calm Mind. However, if you opt for Substitute, then Alakazam will have less coverage. For coverage, Signal Beam deals with Dark-types like Spiritomb, but leaves Alakazam completely helpless against Registeel, Steelix, and Chansey. Focus Blast is the inverse of the aforementioned problem: Alakazam is able to deal significant damage to Registeel and Steelix, but is essentially a sitting duck against Spiritomb.</p>
<p>Spikes support is absolutely necessary in order to make this set even more deadly. With two layers of Spikes down, Alakazam can secure the OHKO on Registeel and the 2HKO on Chansey with a boosted Focus Blast. Offensively, Cloyster fits the bill as a Spikes supporter thanks to its ability to threaten opposing Pokemon with Explosion and check Swellow with Ice Shard.</p>
<p>Spiritomb will immediately present a problem to this set since it has the ability to lock down Alakazam with Pursuit, Shadow Sneak, or Sucker Punch. It is highly recommended that you remove Spiritomb from the match before attempting a sweep; as such, using Blaziken or Houndoom alongside Alakazam can be quite beneficial since they can easily switch into Dark- and Ghost-type attacks. As an added bonus, Houndoom will often lure in Chansey, and a boosted Fire Blast can take a sizable chunk of its precious HP. This ultimately gives Alakazam one less problem when it's attempting to sweep late-game.</p>