Jesus, they gave Cloyster some steroids to abuse in Gen 5 didn't they. I personally hope that this thing makes OU again for the second time in pokemon, because he certainly has the capabilities, even with a Stealth Rock weakness.
I honestly don't even think Shell Break is the ridiculous thing on Cloyster, I think it's the extremely bloated base power of Skill Link Icicle Spear (25 BP STAB that hits 5 times is awesome), and the fact that it literally has no drawbacks; it even has 100% accuracy. Rather, it has several benefits that make it generally better than many other moves in Pokemon.
- Ice is the best attacking move in the game
- Strongest physical Ice move
- Ability to break Subs
- Ability to break heads
- 100% accuracy (as previously mentioned)
- 30 base PP, which is insane for such a strong move
- No immunities
- Breaks through berries during the middle of the move
- Breaks through Focus Sash (being tested in Research thread)
- Breaks through Sturdy
Rock Blast is an amazing move too, because although Cloyster doesn't get STAB on it, it's now just a better Stone Edge for Cloyster, since it gets 90% accuracy now, as opposed to Stone Edge's 80%. In addition, Ice/Rock on its own as a combination hits a whopping 7 types for super-effective damage, which is dangerous considering how high the BP of each move is.
With that, there's obviously some awesome ways of abusing these, such as Shell Break of course:
Cloyster @Life Orb
EVs: 4 HP / 252 Atk / 252 Spe
Skill Link
Adamant/Jolly
- Shell Break
- Icicle Spear
- Rock Blast
- Shell Blade
This is the moveset I would use, because Ice/Rock/Water gets near perfect coverage, being resisted only by Poliwrath, Empoleon, and Kerudio, each of whom still take a massive wallop from Icicle Spear, while switching in, or have to specialize in order to beat Cloyster.
To see just how powerful this set is, just look at these calcs:
+2 Adamant LO Icicle Spear (25 BP STAB x 5 hits) vs.
252/252 Impish Skarmory = 80.8% - 98.8% (OHKO with Rocks)
252/252 Impish Swampert = 89.1% - 106.4%
252/252 Impish Hippowdon = 145.2% - 173.8%
252/252 Relaxed Nattorei = 81% - 95.2%
252/252 Bold Cresselia = 67.6% - 81.1%
252/252 Impish Uxie = 80.5% - 94.6%
252/252 Impish Poliwrath = 46.9% - 54.7%
252/252 Impish Giratina = 119% - 142.9%
252/252 Impish Groudon = 136.1% - 163.4%
252/252 Bold Suicune = 37.1% - 44.6% (possible 2HKO with Rocks)
252/252 Impish Deoxys-D = 80.6% - 95.4%
0/0 Shanderaa = 97.7% - 114.9%
0/0 Kerudio = 78.9% - 92.9%
0/24 Empoleon = 40.6% - 48.7% (incredible considering it 4x resists)
4/0 Kyogre = 74.6% - 87.7%
And keep in mind that these are just with Icicle Spear. A lot of pokemon that can take Icicle Spear well cannot take Rock Blast or Shell Blade very well at all. What's interesting is that even the best physical walls in the game are taken to fatal or near fatal health by a +2 LO Icicle Spear, especially the DP Ubers, since many of them are weak to Ice. Even things that normally resist Icicle Spear are getting 2HKOed by it. Therefore, it seems the best way to reliably beat this thing is by revenging it, which may not be as easy as one might think since Cloyster still has roughly the physical Defense of Rotom-A after Shell Break. Vaccum Wave, however, will easily fuck it up though since he basically has the specially defensive capabilities of Deoxys-A after a Shell Break. Thankfully, not many things have Vaccum Wave in their movesets; I suppose Infernape and Poliwrath would become popular users of it, although neither can switch into +2 LO attacks very well.
Another good moveset I was thinking about, although Cloyster is SR weak, is a Choice Band set, solely because Icicle Spear is awesome and is able to cleanly 2HKO a 252/252 Impish Skarmory with a Choice Band. It also lets Cloyster put his physical bulk to much greater use.
For reference, here is the moveset:
Cloyster @Choice Band "Choicester"
EVs: 252 HP / 252 Atk / 4 Spe
Skill Link
Adamant
- Icicle Spear
- Rock Blast
- Shell Blade
- Explosion
Basically, unlike the Shell Breaker, this moveset relies on coming in on Physical attacks and firing off Icicle Spear as much as you can. A lot of the physical walls are still 2HKOed or OHKOed by Icicle Spear (including Cresselia, who is 2HKOed after Rocks). This set seems really good, although the SR weak might be a little off-putting. However, if the team has a Rapid Spinner, Choicester seems like a good option.
Anyway, that's my rant about Cloyster. In conclusion, the new and improved Icicle Spear is one of the best things Cloyster could've hoped for, and he puts it to very good use. All I can say is, Garchomp, watch out, because Cloyster isn't just a specialized counter anymore, he's making his presence known with the big boys. xD