
[OVERVIEW]
Cloyster holds a niche in Ubers thanks to its combination of unique traits; it has fantastic physical bulk, letting it tank Snorlax's Self-Destruct, Mew's +2 Earthquake, and Tauros's Hyper Beam with relative comfort. Its Ice typing gives it a powerful STAB Blizzard as well as an immunity to freeze. It also has access to the mighty Explosion, a potent tool in Ubers, and its signature move Clamp can choke down slower foes and provide free switches for its teammates.
However, Cloyster is weighed down by multiple detrimental traits that prevent it from being a true oppressive force in Ubers. Its matchup into unparalyzed Mewtwo is horrendous, only 5HKOing it with Blizzard while being 2HKOed by Psychic and Thunderbolt in return, letting Mewtwo switch in with little risk. It can't reliably switch into the physical attackers it wants to tank hits from, as it becomes much worse if it is paralyzed by Body Slam or Thunder Wave. Cloyster also finds it difficult to heal off the damage it takes, as its only way of healing is Rest, which forces it into complete passivity for two turns. Cloyster also relies on heavy paralysis support to effectively use Clamp and Explosion due to its mediocre Speed and weakness to special moves.
[SET]
name: Physical Tank
move 1: Blizzard
move 2: Clamp
move 3: Explosion
move 4: Rest
[SET COMMENTS]
Set Description
=========
Blizzard is Cloyster's primary attacking option, OHKOing Rhydon 33.3% of the time, 2HKOing Exeggutor and Zapdos, and 3HKOing Tauros. Clamp can provide free switches for Cloyster's teammates. It can also be used to whittle down slower foes into KO range from another attack, but this is unreliable due to its poor accuracy. Explosion allows Cloyster to take out or do heavy damage to a foe, OHKOing frailer foes such as Alakazam and Chansey 74.4% of the time and doing a hefty chunk to bulkier foes, such as doing 60% minimum to Snorlax and 62.1% minimum to Mewtwo. Explosion also has the benefit of prematurely ending the turn, which can deny recovery on slower foes. Rest increases Cloyster's longevity and clears paralysis, but it is left completely helpless for two turns and cannot regain its Speed until it switches out, allowing Pokemon that threaten it, such as Mewtwo, Starmie, and Zapdos, to switch in and fire off strong attacks or set up.
Cloyster necessitates paralysis support to function, so Thunder Wave Mewtwo and Mew make great partners, as they can spread paralysis across the opposing team, particularly to the opposing Mewtwo and Mew. Chansey is also good at spreading paralysis to support Cloyster, and it is a good switch-in to the special attackers Cloyster is afraid of, such as Mewtwo, Starmie, and Alakazam. Rhydon can make a good teammate, as it walls Zapdos and Jolteon, which both threaten Cloyster immensely; Cloyster also switches into Tauros's Earthquake and Blizzard well to support Rhydon. Rhydon—much like Cloyster—also benefits heavily from spreading paralysis across the opposing team. Cloyster can be paired with other Explosion and Self-Destruct users such as Exeggutor, Snorlax, Explosion Mew, and Self-Destruct Mewtwo to attempt to overwhelm the opponent and trade down Pokemon until a strong sweeper, such as Zapdos or Tauros, can win the game. Cloyster should be kept hidden until the opponent's Mewtwo is paralyzed, as once it is, Cloyster becomes far more offensively threatening. Cloyster should only use Rest if it absolutely needs to, as waking up is incredibly difficult.
[STRATEGY COMMENTS]
Other Options
=============
Hyper Beam can be used in place of Rest, as it allows Cloyster to finish off weakened Chansey and Ice-resistant foes. However, this leaves Cloyster completely unable to switch into physical attackers, as paralysis will permanently ruin it. Ice Beam has double the PP of Blizzard and better accuracy. However, it is significantly weaker than Blizzard, failing nearly every important KO range. Although incredibly niche, Reflect can replace Explosion to make Cloyster better into Mew and Snorlax, with Cloyster taking a paltry 30.6% maximum from Mew's +6 Earthquake and only 37.9% maximum from Snorlax's Self-Destruct. However, lacking Explosion leaves Cloyster much less threatening and much easier to answer, and physical attackers will usually just switch to a Water-type or Mewtwo to answer Cloyster, usually rendering Reflect useless.
Checks and Counters
===================
**Water-types**: Water-types such as Starmie, Slowbro, and Lapras switch into Cloyster with minimal risk and threaten it back with heavy damage or paralysis. However, Slowbro and Starmie have to worry about getting frozen, and all of them take heavy damage from Explosion.
**Mewtwo**: Mewtwo outspeeds and 2HKOes Cloyster with Psychic or Thunderbolt, while it's only 5HKOed in return by Blizzard, though it must be wary of being frozen. Mewtwo becomes much worse at switching into Cloyster if it's paralyzed, as Cloyster can choke it down or pivot to a teammate with Clamp; it can also do heavy damage to it with Explosion while also preventing Recover that turn.
**Paralysis**: Cloyster despises paralysis, as it relies on its Speed and cannot afford to lose turns to full paralysis. Paralysis also makes Cloyster's chance of hitting Clamp a mere 56.25%. Cloyster's only means of removing paralysis is Rest, which is difficult to pull off successfully. This makes switching into Body Slam extremely risky.
**Electric-types**: Zapdos and Jolteon both outspeed and 2HKO Cloyster with Thunderbolt, with Zapdos even having a 23.1% chance to OHKO it. However, the former is 2HKOed by Blizzard and the latter is 3HKOed, so they cannot switch into Cloyster well.
**Chansey**: Chansey can switch into Cloyster with ease, taking a mere 18.9% maximum from Blizzard and threatening it with paralysis and a 4HKO from Seismic Toss. However, Chansey has to be wary freeze as well as Explosion, as it is OHKOed by the move 74.4% of the time. Chansey is also quite passive and cannot do much to threaten Cloyster's team beyond using Thunder Wave. Cloyster can also choose to pivot out with Clamp, which denies Chansey the chance to recover HP or paralyze anything and can result in it slowly getting worn down over time.
**Gengar**: While Gengar cannot switch into Cloyster's Blizzard well, as it is 3HKOed 30.8% of the time, it 2HKOes Cloyster with Thunderbolt and can absorb Cloyster's Explosion.
**Jynx**: Jynx outspeeds Cloyster and 3HKOes it with Psychic, while Cloyster's Blizzard only 6HKOes in return, but Cloyster's Explosion OHKOes Jynx. However, this is often a bad trade for the Cloyster user.
[CREDITS]
Written by:
https://www.smogon.com/forums/members/notverycake.625260/
Quality checked by:
https://www.smogon.com/forums/members/gastlies.540559/
https://www.smogon.com/forums/members/sabelette.583793/
Grammar checked by:
https://www.smogon.com/forums/members/sabelette.583793/
Last edited: