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Dear Mr. Souper,
       I have been sending you a few emails lately about my decks. The last
one i sent you was yesterday and I have changed my deck a little around
already so im am finally ready to give you my new deck. Please if you can
post this do. I haven't tried it out yet but i think it is pretty good. Well
enough of me here is my deck.

M.I.A.  (Massacre in Action)

Pokemon  (29)

2 Mewtwo (base)
3 Abra
3 Kadabra   (all base)
3 Alakazam
2 Gastly
2 Haunter   (all fossile)
2 Gengar
4 Clefairy
3 Clefable
4 Chansey
1 Mr. Mime

Trainers  (8)

2 Pokeball
2 Rocket Secret Experiment
1 Nightly Garbage Run
1 Professor Oak
1 Energy Removal
1 Pokemon Trader

Energy  (23)

19 Psychic
4 DBC

I am really short on trainors and i don't know what to take out and what to
put in. Please help if you have the time. My object is to swap damage and
hit them hard.
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Overview
Your Pokemon choices are good, but some minor tweaking could be done and you've got too many families. You don't have nearly enough Trainers, either. More card drawing and multiples of everything should help you out.

Pok閙on
Two stage two families don't really work in today's environment, they take up too much space and take too long to get out. Take out the Gengar line. I do like Clefable, but take it to a 3/2 family to make room. If it doesn't seem to be helping you, you can always take them out for a few Ditto instead. Use Movie Mewtwo instead of Base, and make the Alakazam line 4/3/3. Add a couple more Mr. Mime, too:

3 MP Mewtwo
4 Abra
3 Kadabra 
3 Alakazam
3 Clefairy
2 Clefable
4 Chansey
3 Mr. Mime


Trainers
Your Trainers don't really have any focus or direction here. It's a little bit of everything and usually that kind of randomness doesn't help. The more control you have over your deck the better, and with a lot singles and no actual plan or direction to the cards you use, you won't have much control of your deck. You need more card drawing to keep access to the rest of the deck and the cards you need. You could use some disruption like Gust of Wind, and since it's damage swap you need healing cards like Pokecenter and Scoop Up. I'd go with something like this:

4 Oak
3 Com. Search
2 IF
3 Pokecenter
3 Scoop Up
2 Gust of Wind
It's not a lot of Trainers, but that's one of the problems with a deck that relies on a lot of Pokemon. You could free up a couple more spaces by switching Clefable for Ditto if you find that you need to.

Energy
Alakazam usually won't attack and Clefable only needs one Energy. MP Mewtwo recycles energy and Mr. Mime only takes two. With that in mind, you can cut it back to 15 Psychic and 3 DCE. Here's the finished deck:
Pokemon  (25)
3 MP Mewtwo
4 Abra
3 Kadabra 
3 Alakazam
3 Clefairy
2 Clefable
4 Chansey
3 Mr. Mime

Trainers  (17)
4 Oak
3 Com. Search
2 IF
3 Pokecenter
3 Scoop Up
2 Gust of Wind

Energy  (18)
15 Psychic
3 DCE
Like I said, it's still kind of light on Trainers, but overall it should be better. Good luck!

~ Souper ~