
Corsola
This Pokemon has been placed in UU in previous generations, primarily because even though it has an awesome movepool, it doesn't have much in the way of stats. This hasn't changed much in DP, except that its movepool has gotten even better.
Type: Water/Rock
This is supposed to be a tankish Pokemon, but it's got 2x weaks against electric, fighting, and ground, all of which are very common, as well as a 4x weak against grass, which isn't as common. On the plus side, it has a 2x resist against normal, ice, poison, and flying, as well as a 4x resist against fire.
Stats: 55 HP/55 Atk/85 Def/65 SAtk/85 SDef/35 Spd/380 total
Traits:
Hustle (Drop accuracy by 20% to increase damage by 50%)
Natural Cure (Corsola heals all status conditions when it switches out)
Physical Movepool (STAB in bold):
Earthquake
Explosion
Frustration/Return
Icicle Spear (breeding)
Natural Gift
Rock Blast
Secret Power
Spike Cannon
Stone Edge
It doesn't even get waterfall. ;_;
Special Movepool:
Ancientpower
Blizzard
Earth Power
Hidden Power
Ice Beam
Power Gem
Psychic
Shadow Ball
Surf
This is kind of better. It even learns Psychic. IT LEARNS PSYCHIC.
PSYCHIC CORAL GO! :D
Support Movepool:
Amnesia (breeding)
Aqua Ring
Barrier (breeding)
Calm Mind
Hail/Rain Dance/Sandstorm/Sunny Day
Ingrain (breeding)
Light Screen/Reflect
Lucky Chant
Mirror Coat
Recover
Refresh
Rest
Rock Polish
Safeguard
Sleep Talk
Stealth Rock
Substitute
Toxic
This would be totally sweet if Corsola had, say, 10 moveslots.
Movesets:
Stallwhore
Corsola @ Leftovers
EVs: 252 HP/128 Def/128 SDef
Natural Cure
-Amnesia
-Barrier
-Ingrain
-Toxic
This set is legal, as you get all the breeding moves from Cradily.
Ingrain first, to keep from being phazed, and then amnesia and barrier up while throwing out toxics. If you're worried about status, choose Aqua Ring or Recover instead so you can switch out and trigger Natural Cure. In any case, watch out for hazers and CH-hackers.
CM Hustle Abuser
Corsola @ Leftovers
EVs: 128 HP/128 Def/252 SAtk
Nature: Modest (+SAtk, -Atk)
Hustle
-Calm Mind
-Power Gem/Ancientpower
-Surf
-Recover/Earth Power/Ice Beam/Explosion
This makes you into a CMer. Water/Rock has surprisingly good type coverage, only being resisted by Breloom, Dialga, Empleon, and Poliwrath. Choose the last move based on who you hate the most.
I haven't done the calculations, but it looks like Corsola could actually do some decent damage with a couple of CMs under its belt. Of course, you have to watch out for the 80% accuracy. Also remember you're not just slow but damn slow, and it'll be hard for you to get all the CMs up.
Pseudopasser
Corsola @ Leftovers
EVs: 252 HP/128 Def/128 SDef
Natural Cure
-Light Screen
-Recover
-Reflect
-Surf
It can pass both reflect and light screen in the same set. Recover is for those hits you inevitably take, and Surf is for if you're stuck with it as your last Pokemon.
Comments: Dear Gods. Why does there seem to be an inverse relationship between movepool depth and stat power? On the one hand, we've got things like Qwilfish and Corsola, which have all sorts of nifty moves but no power, and on the other side, things like Arcanine and Gyarados, which have godlike stats but not enough moves to fill them out. Anyways, the stat total, movepool, and traits seem to place it solidly in the UU category.
Why the hell didn't this thing get a D/P evolution? It looks like it'd be perfect for it.