Overview
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Porygon2 is a very quirky Pokemon, but it pulls its weight of 71.6 pounds with virtues in many different roles. It has a decent defensive typing as well as solid coverage to handle many threats effectively. Access to (all Pokemon get access to every item) Eviolite gives it sky-high defensive stats, and it has a moderately high Special Attack to boot. Trace is a phenomenal walling ability, and with proper switching, it can grant Porygon2 fantastic abilities such as Protean or Intimidate. However, the virtual duck is not without its flaws. Porygon2 has a low Speed stat, is prone to being afflicted by status, and its reliance on Eviolite takes away passive recovery from Leftovers. Porygon2's Normal typing gives it a Ghost immunity, but that comes coupled with a weakness to Fighting, one of the most common attacking types in the tier. Overall, Porygon2 is an effective threat both defensively and offensively, especially with its coverage, and is easy to fit into almost any team.
Specially Defensive
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name: Specially Defensive
move 1: Thunderbolt
move 2: Ice Beam
move 3: Shadow Ball / Thunder Wave / Toxic
move 4: Recover
ability: Trace
item: Eviolite
evs: 252 HP / 4 Def / 252 SpD
nature: Calm
Moves
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BoltBeam provides at least neutral coverage against nearly all opponents, and when backed up by used with Porygon2's respectable Special Attack, both moves pack quite a punch. Discharge is another potent move that can replace Thunderbolt for the 30% paralysis chance if need be. The next move, (RC) Shadow Ball, (RC) helps deal with the many special attackers weak to the Ghost-type moves, and hits Aegislash for super effective damage; however, Porygon2 takes significant damage from Aegislash's Sacred Sword. A status move can also be used in this slot instead for more stall-oriented needs. Toxic wears down many attackers and walls, while Thunder Wave can help slows them down faster Pokemon so that Porygon2 and other team members outspend it the opposing Pokemon. Recover is a necessity, (AC) as it is Porygon2's only option to way of regaining HP.
Set Details
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A Calm nature and the given EV spread maximize Porygon2's ability to take special hits Special Defense. Eviolite is, as on any set for Porygon2, a necessity because of the bulk it provides. Trace is used as an option to steals your opponent's Ability, which is often helpful.
Usage Tips
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Porygon2, by virtue of its bulk, can switch into almost any special attacker with ease Special Attacker and not be 2HKOed, even ones as powerful as Mega Charizard Y. Thus, it can should be used as a panacea solution for special attackers, (RC) by walling these Pokemon, spreading status, and attacking with moderate power. It's necessary to use Recover often so Porygon2 doesn't get worn down by powerful attacks, (AC) and entry hazards, and as well as Toxic. Porygon2 still has the physical bulk to take Psyshocks and weaker physical attacks, and can pivot, (RC) but it will be worn down if it does so. Porygon2 can utilize Trace to take advantage of its opponent's ability, allowing it to take STAB attacks from Vaporeon, (RC) and Houndoom, and Arcanine, (Arcanine was rejected) among others. Heatran's Lava Plume and Gliscor's Toxic, which would otherwise be threatening moves, are also both shut down by Trace.
Team Options
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A spinner Rapid Spin user such as Excadrill or Defog user such as Mandibuzz, Latias, Zapdos, or Skarmory is recommended to keep entry hazards off the field so as to preserve Porygon2's health is not worn down. A bBulky Pokemon which that resists the Fighting-type moves, (RC) such as Landorus-T or and Mega Venusaur, (RC) is are also important to handle said Fighting-types those Pokemon which threaten Porygon2. Cleric support from Clefable or Sylveon is much appreciated, (AC) very nice as Porygon2 has no way to deal with status. Fairy-types have good synergy with Porygon2 in general, as they can take resist Fighting-type moves aimed at attacks and Porygon2 can easily take most neutral special attacks aimed at them.
Physically Defensive
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name: Physically Defensive
move 1: Thunderbolt
move 2: Ice Beam
move 3: Recover
move 4: Toxic / Thunder Wave
ability: Trace
item: Eviolite
evs: 252 HP / 252 Def / 4 SpD
nature: Bold
Moves
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Thunderbolt and Ice Beam are used because they are reasonably powerful and attain great coverage few things resist both moves, allowing Porygon2 to hit most opponents neutrally. Recover is an absolute necessity for this set as it allows Porygon2 to heal itself and to stall out poisoned opponents out. Either Toxic or Thunder Wave can be used in the last slot; keep in mind that Toxic is generally a better choice because of the passive damage it inflicts. Thunder Wave is helpful for crippling hostile sweepers.
Set Details
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Trace is the best preferred ability for this set, as it can allowing Porygon2 to copy get access to many wonderful abilities. Analytic is another option for increased damage output, but lessens Porygon2's walling capabilities, making Trace a generally superior choiceso it is not slashed due to Trace's general superiority. The Bold nature, together with the given EV spread along with a Bold nature maximizes, (RC) makes Porygon2's defenses in order to take on most physical attackers even more solid at no cost at all.
Usage Tips
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This set aims to can force switches, deal damage, and spread status. In a pinch, this set can be used as a pivot as well. This set counters stops mixed Aegislash, Salamence, and Haxorus, (AC) and stops Garchomp in their its tracks. It is necessary to heal up predict with Recover often, as Porygon2 is outsped by most things. It's not recommended to switch Porygon2 into strong attacks because it can be worn down by hazards and repeated hits very quickly this way. Porygon2 still has great mixed bulk with this set, so it can still take moderately powerful special attacks from Pokemon such as Nidoking, (AC) Keldeo, (AC) and Clefable, (RC) as well as not be OHKOed by many of Keldeo's common attacks.
Team Options
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A very helpful ally for this set to have is a Ghost-types such as Gengar and Aegislash make great teammates for their ability to, (RC) because it can switch into on very common Fighting-type moves and come out on top such as Focus Blast and Superpower, which this set cannot take as well as the Specially Defensive set can. A sSpecial walls such as Latias or Tentacruel and Sylveon can take strong special attacks aimed at Porygon2 also be very helpful, as this set needs support on the special side. As with the first set, some method to eliminate entry hazards removal is very useful. Excadrill, Latios, and Latias are good examples of hazard removers. Tentacruel can fulfill this need as well.
Trick Room Support [Support Tank]
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name: Trick Room Support [Support Tank]
move 1: Trick Room
move 2: Ice Beam
move 3: Thunderbolt
move 4: Recover / Tri Attack / Hidden Power Fire
ability: Trace / Download
item: Eviolite
nature: Quiet
evs: 252 HP / 252 SpA / 4 SpD
Moves
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Porygon2 can also run a radically different set from the previous two as its low Speed coupled with its high Special Attack makes it a very powerful Trick Room tank and supporter. (more of a Usage Tips thing) Trick Room is self-explanatory. and The classic BoltBeam combination is a classic and provides stellar coverage on most of the metagame never fails. In the last moveslot, Porygon2 can use either Recover for healing or a powerful STAB Tri Attack as a STAB move resisted by only two types. Shadow Ball canould also be used here to hit Ghost-types, but it's not recommended. Hidden Power Fire is an excellent coverage move, having the opportunity to hitting the very common Steel-types in the tier, (RC) such as Scizor and Ferrothorn. You may opt want to run Recover over either Thunderbolt or Ice Beam and keep HP Fire in the last slot if you want healing and coverage for Steel-types.
Set Details
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This EV spread neglects defensive investment (Porygon2's defenses are already very high with Eviolite) in exchange for full-on sweeping capabilities, (AC) though Porygon2 is still quite bulky thanks to Eviolite. The A Quiet nature along with 0 Speed IVs drops minimizes Speed and raises Special Attack in order to "outspeed" most Pokemon in Trick Room and to hit as hard as possible, (RC) which is useful for a Trick Room tank. Trace is a great ability, because many Pokemon that Porygon2 may come up against have abilities that granting it useful abilities such as Intimidate and Levitate immunities to their own types, such as taking Flash Fire from Heatran. Download is also helpful to improve your chances of sweeping. Analytic is not helpful, as the goal of Trick Room is to move first. (If it isn't helpful, don't mention it in Set Details)
Usage Tips
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Porygon2 can reliably set up makes a reliable setter of Trick Room for its team throughout the game, so it should be preserved to do this multiple times. It can also deal good modest damage under Trick Room, while stomaching still handling many attacks. This is more of a support Pokemon for Trick Room teams, and it can still be used as a sponge for powerful attacks.
Team Options
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Reuniclus is another good solid Trick Room sweeper that works well with Porygon2, tanking Fighting-type moves aimed at Porygon2. Conkeldurr is a fast tank in Trick Room, so it appreciates the support from Porygon2's own Trick Room as well provides. Escavalier is an effective Pursuit trapper and has an extremely high Attack stat along with abysmal Speed, making it a great fit. Mega Abomasnow has good bulk and high attacking stats while also being quite slow, but its hail can wear down Porygon2. A few Pokemon that work outside of Trick Room like Garchomp are also necessary, though.
Other Options
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Porygon2 is such a versatile Pokemon that there isn't much it can't do. The three sets listed are its most popular, but feel free to use any set that fulfills whatever niche you need that Porygon2 can provide. One especially notable alternate move for Porygon2 is Foul Play. It provides coverage on Ghost- and Psychic-types, and it is also handy against opponents with higher base Attack stats than Porygon2's. On the defensive sets, Conversion 2 deserves a mention, because it can give Porygon2 useful resistances to moves used by Choice-locked Pokemon. This could also be used on an Analytic sweeper set with BoltBeam and Recover. Psyshock can be replace used instead of Thunderbolt or Ice Beam if special tanks such as Conkeldurr are proving a lot of trouble, but this sacrifices the much more useful coverage of Electric- and Ice-type moves as well as some power. Discharge can also be used on any set except Trick Room for the paralysis chance.
Checks & Counters
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**Fighting-Types**: The Offensive Fighting-types are very common in the tier, and are often the best way to deal with Porygon2. Examples include is a common offensive type, (AC) present as STAB on the popular Breloom, Terrakion, Keldeo, and Conkeldurr. (Add period) as well as coverage in Focus Blast for Gengar and other special attackers. On the physical side, Superpower is a very common coverage move as well. As Porygon2 is weak to the Fighting-type, Pokemon running Fighting moves make effective checks. Even mixed sweepers occasionally run Focus Blast or Superpower, so be wary.
**Taunt**: Taunt prevents Porygon2 from using Recover, status moves, and Trick Room or status moves and from setting up Trick Room. This prevents Porygon2 from executing its primary function as a tank. Without any form of recovery due to its Eviolite reliance, Porygon2 must either switch out or hope not to survive temporarily without reliable recovery faint after being inflicted with Taunt.
**Item Removal Trick, Knock Off, and Switcheroo**: Porygon2 is absolutely reliant on Eviolite to work in any given situation, and any one of these three commonly seen moves can eliminate its the item in an instant. Thus, Porygon2 should not stay in and hope to be successful against Pokemon any enemies known to commonly run one of these moves.
**Status**: Toxic and Will-O-Wisp are very detrimental to Porygon2, slowly wearing it down so that strong attackers can overwhelm it. Porygon2 often sees itself afflicted with status, and without a teammate with Heal Bell, it cannot get rid of it. Porygon2 is helpless to Toxic poison, which will slowly whittle away at its lifespan.