Ah Raindance.
Using the Blastoise that's been out since base.
*sigh* Everyone hates it, except for the users.
hehehehe....
Lets Observe The pokemon choices for the raindance, shall we?
 
POKEMON
 
Overview - Basically Blastoise and his high-hitting buddies
 
Squirtle*****       Chansey**        Kangaskhan**
Blastoise*****     Articuno****      Poliwrath***
Lapras***           Gyarados***     A Bunch of other Water pokémon*
Dewgong**         Jigglypuff****    Scyther***
 
Rating System of Useful-ness and Popularity:
****** - Always
**** - Most Common
*** - Either Losing Popularity, or Gaining
** - Probably a cheaper Substitute, or a not-too-popular Staller
* - They probably shouldn't even have the card in there
 
Now, Lets Examine these Pokemon's weaknesses
 
Blastoise - Aerodactyl, Mew, Muk, Promo Pikachu, Electabuzz, Early Gust of Wind, Psyduck, and Lass.
Articuno - Chansey, ER, uh, what can I say, Articuno's a great card.... =( 
I can't think of any weaknesses it could have except to a Chansey.....doh.
Jigglypuff - Mwahahahahaha, The Hitmonchan, or basically any fighting pokemon.
Jigglypuff can't hold its own except for against Mr. Mime and other various Psy Pokemon.
Gyarados - The ever-popular Scyther.
Poliwrath - Look above.        ^ ^ ^ ^ ^
Kangaskhan & Chansey - Not too popular, can't do much except kill them, because thats what both of you want........ :oP
 
Thats the Pokemon Section.  If you wanted to build a Blastoise Hunter (what I call my anti-rain dance) It should be an Electric/Fighting Deck, with 1-2 Promo Pikachu's, Hitmonchans, Electabuzzes, and Scythers.  Muk and Aerodactyl also fit nicely into any anti-Rain Dance, or as Rain Dance protection.  Yes, most anti-decks look like modified haymakers, but thats the way it goes.
 
The TRAINERS.
 
Overview - Well, Let me put it this way, probably stuff to get energy and blastoise, a few gusts, and maybe plus powers.  Hehehehe.....
 
Standard Rain Dance Trainers
 
Bill
Oak*
CPU Search*
Poké Trader
Pokébreeder*
Gust of Wind*
Plus Power
Gambler
 
Note: The Ones with the * are the ones Rain Dance RELIES on.
Take out those, you take out the deck.
 
Now, Since no one's smart enough to put in a single Wartortle to get around muk and lass, hehe......=) Just a note that Wartortle isn't a bad idea....
Rain Dance is Trainer heavy, and its not.  See, it usually doesn't run a variety of Trainers, but it uses masses of those trainers.  Since MOST EVERYONE relies on pure breeders to get out blastoise, You can stop the trainers and be productive in killing off multiple Squirtles.  The key to these trainer problems?
A first turn lass. hehehe, they usually have god hands, since they have about 4 of everything.  So to take Rain Dance Trainers, you need some of the following:
 
Lass    Imp. Oak    Omanyte    Mankey    Evil Vileplume
 
Onto the Energy........
 
Overview: Rain Dance is now running low energy.  Energy Denial, if put together correctly, CAN crush Rain Dance.  But alas, few build the ER right. They often forget that they need a stalling half of the deck, since the opponent is going to end up oaking and billing like crazy to get that energy they need. 
 
Average Energy Count:
22-24 Water (Could Be Less)
2-4 DBL's (Depending on the amount of Colorless Pokemon)
 
Lapras will slowly eat away at you with its one energy attack, so in this energy denial you're going to use to take Rain Dance down, you're going to have to Imp. Oak that Hand full o' Energy they just got from a REAL prof oak. heheh.  If you're lucky, they'll end up with all those trainers they have and no energy.  Even if Blastoise can put down that energy fast, It's not a threat if its in their hand, and its ER bait if its on the table. 
 
Hate-Mail, Good Mail, and Complaints from Rain Dance users go to:
SLeePyxDrAgOn@netzero.net
 
   --(`·SLeePy·DrAgOn·´)--™