[OVERVIEW]
With Adaptability and the ridiculous offensive stats that Beedrill gains upon Mega Evolution, Beedrill becomes it performs as a fearsome U-turn user that forces in slower checks such as Zapdos and Toxapex for teammates to take advantage of. Mega Beedrill's (this isn't incorrect, they have the same movepool) unique movepool lets it support the team in various ways such as breaking with Swords Dance, trapping with Pursuit, and even setting up Toxic Spikes. That's where the good news ends. (RP) However, (AC) Beedrill's niche is contrary to fits poorly with its typing (contrary is a little vague), (AC) as it gives it a nasty weakness to Stealth Rock, even which is made worse when Spikes are is taken into account. Beedrill also struggles in a metagame where Landorus-T runs rampant.
[SET]
name: Offensive Pivot
move 1: U-turn
move 2: Poison Jab
move 3: Drill Run
move 4: Swords Dance / Knock Off / Pursuit
item: Beedrillite
ability: Swarm
nature: Jolly
evs: 252 Atk / 4 Def / 252 Spe
[SET COMMENTS]
Moves
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U-turn is a powerful move that forces many switches; it provides free turns for powerful strong breakers such as Tapu Lele and Kyurem-B because of how Mega Beedrill tends to force in slower Pokemon such as Landorus-T and Toxapex. Poison Jab is Mega Beedrill's strongest attack, easily 2HKOing Pokemon such as like Mega Charizard X and Tornadus-T. Poison Jab It even has a 30% chance to poison, (AC) meaning that it has applications as a fail-safe (add hyphen) move (I think you're implying using the odds to come back from unfavourable situations, but it needs to be clarified.). Drill Run is mandatory, (AC) as Magearna, Mega Mawile, Heatran, Magnezone, and specially defensive Toxapex would otherwise wall it Beedrill. Swords Dance is the preferred filler move in the fourth slot to allow it to break Pokemon such as like Zapdos and Toxapex, (RC) while making it a more immediate threat to defensive teams. Knock Off can be used for removing items such as Shed Shell, which is instrumental for teammates such as like Magnezone. Finally, Pursuit can be used is an option (don't implement this) in the last slot to trap Gengar and get vital chip damage on targets such as Tapu Lele and Heatran.
Set Details
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Maximum Attack EVs are necessary to hit as hard as possible. A Jolly nature is mandatory, (AC) as Mega Beedrill cannot outpace Pokemon such as like Tapu Koko and slower Choice Scarf users such as Tapu Bulu, Hoopa-U, and Heatran with an Adamant nature. Swarm is used over Sniper as it to gives Mega Alakazam and Porygon-2 Porygon2 useless abilities if Beedrill were to be used as sack death fodder prior to Mega Evolution.
Usage Tips
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U-turn should be used most of the time because Mega Beedrill's purpose is to provide free switches. Beedrill will naturally become a threat, (AC) as it wears down its checks with the combination of Knock Off and U-turn, so it is recommended to treat Beedrill it as a supplemental team member more than a standalone Pokemon. Analyze the risk and reward of clicking Poison Jab.; (period->semicolon) it can be the difference between getting a KO or and losing momentum, the latter being the opposite of what Beedrill should be doing. Similarly, if Pursuit were to be used over Drill Run, (RC) try not to gamble too much with it Pursuit when deciding between using it and Drill Run(assuming this is what you meant.).
Swords Dance should be used in matchups where teams rely on pivoting in to beat Mega Beedrill with Pokemon such as like Ferrothorn and Zapdos. Swords Dance It is also important for forcing Skarmory in when playing against stall.; (period->semicolon) many players will be resilient unwilling to bring it in and will just recover with their Mega Sableye or Toxapex, (AC) since going into Skarmory completely saps momentum, (AC) especially if Stealth Rock is taken into account. Swords Dance completely eliminates this factor in actual gameplay, making it important because breakers such as like Garchomp cannot set up on Sableye for example. Despite what the type chart is the weakness to Rock, prioritize getting Mega Beedrill in even if Stealth Rock is up.; (period->semicolon) Mega Beedrill is amazing at maintaining momentum, (AC) and entry hazards can always be removed when Beedrill it actually needs its health. Remember that Mega Beedrill can still come in on Pokemon such as like Tapu Fini, Tangrowth, Tapu Bulu, and Clefable, (AC) so take advantage of these Pokemon them.
Team Options
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Magnezone is an excellent teammate, (AC) since it traps Mega Scizor (as far as I know, non-Mega Scizor is irrelevant in OU; remove this otherwise), Celesteela, and Ferrothorn, Pokemon that would otherwise comfortably come in on Mega Beedrill. Mega Beedrill synergizes well with Magnezone, (AC) as it can Knock Off remove (avoid using moves as actions) Skarmory's Shed Shell with Knock Off and destroy Heatran with Drill Run, which are Pokemon that Magnezone cannot trap (might want to rephrase this, since it can trap Heatran; it just can't beat it after doing so.). Even if entry hazard control is one of the more controversial terms difficult to make use of right now (No time-related terms) (just trying to decipher what exactly this means, but feel free to clarify because I'm not sure) due to the prevalence of offensive hazard setters and spin blockers spinblockers such as Greninja and Gengar, respectively, hazard control it will can still be a necessity, especially late-game (add hyphen). More offensively inclined options of hazard removal are preferred., (period->comma) so Kartana, (RC) Pheromosa, (RC) (iirc it's banned now) (yes) and Latios fill this role quite nicely.
Without a solid breaker, Beedrill is useless. Beedrill It is great at giving free switches, (AC) so look no further for teammates than slapping on some of the deadliest breakers threats (repetition) in the tier: Tapu Lele, Kyurem-B, Hoopa-U, Greninja, Choice Band Zygarde, Gengar, and Crawdaunt are some of the many examples. Having hazards up makes the game much quicker., (period->comma) so Spikes Greninja, whether Ash or Protean regardless of its ability, is a premier teammate. and Stealth Rock users include such as Landorus-T and Heatran make for great teammates. Finally, Rotom-W forms a potent VoltTurn core with Beedrill, (AC) as Rotom-W can pivot into Pokemon such as like Landorus-T and Mega Pinsir, proceeding to force them out and gain momentum with Volt Switch. Other VoltTurn teammates include Magearna and Tapu Koko. Ice Beam Magearna, (AC) in particular, (AC) can lure in Landorus-T, even better especially if it is holding a Shuca Berry.
[STRATEGY COMMENTS]
Other Options
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X-Scissors, Fell Stinger, and Tailwind are all appealing options, but they fail to address any of the issues Mega Beedrill currently has. Beedrill will should more often use U-turn than Pursuit for chip damage, (AC) as the loss in momentum is detrimental to the types of teams Beedrill it is on (if this is what you're trying to say, this probably belongs in Usage Tips, although there is a line there regarding using Pursuit or Drill Run.). Toxic Spikes is an option to put pressure on teams that rely on defensive cores with Tangrowth, Zygarde, and / or Tapu Fini.
Checks and Counters
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**Stealth Rock**: Beedrill can only keep up momentum for so long with Stealth Rock up on the field (this isn't clear in telling readers how Stealth Rock hinders Mega Beedrill) Mega Beedrill uses U-turn frequently to keep up momentum, so passive damage from Stealth Rock wears it down quickly.
**Bulky Ground-types**: Landorus-T completely walls Mega Beedrill., (period->comma) setting up Stealth Rock or using it as setup bait if it Beedrill decides to uses a different move (i think you're missing some words here, though, because it doesn't make sense at the moment), (RC) Landorus-T can set up Stealth Rock or use it as set up bait. Rocky Helmet Garchomp and Hippowdon can punish Mega Beedrill for using U-turn (does Hippowdon also carry Rocky Helmet? Otherwise, I'm not sure how it punishes Beedrill for using U-turn). Gliscor also walls Beedrill, (AC) but it has to be wary of Knock Off if its Toxic Orb is not activated.
**Priority and Choice Scarf Users**: Mega Beedrill's abysmal physical Defense means it can be easily picked off by priority from the likes of Mega Mawile or Zygarde. Choice Scarf users such as Garchomp and Greninja can also easily revenge kill it.
**Non-Ground-weak Steel-types not weak to Ground**: If Magnezone is not paired with Mega Beedrill, they non-Ground-weak Steel-types not weak to Ground are universal switch-ins. Mega Scizor, physically defensive Ferrothorn, Celesteela, and Skarmory completely wall Beedrill, (AC) as they take minimal little to no damage, (RC) if not being immune, (RC) from Drill Run.
**Toxapex**: Drill Run bounces off of (leave "of") Toxapex. Specially defensive variants are softer checks, (AC) but they can still usually force Mega Beedrill out with the threat of a Scald burn from Scald (leave "Scald burn").