Alright, good news and bad news. Bad news is that I'm still not happy with the Trainer Kit double-deck, but it will be coming out later this week. To tide you over, here's a doubled Mystic Typhoon, fresh from Flashfire!
Pokémon: 22
4 Miltank
3 Furfrou
2 Walrein
4 Sealeo
4 Spheal
2 Milotic
3 Feebas
Trainers: 22
2 Evosoda
2 Muscle Band
4 Pokémon Center Lady
4 Pokémon Fan Club
4 Professor's Letter
2 Professor Sycamore
4 Roller Skates
Energy: 16
16 Water
Strategy: While not perfect at achieving this goal, this double-deck hopes to use Miltank's Powerful Friends attack with Walrein in play to do 80 damage for one Energy card. Getting the Stage 2 Pokémon into play may prove difficult. Milotic acts as a cross between an interesting secondary attacker and a useful utility for the deck: If low on HP, you can take control of the situation and choose to Knock Out Milotic on your own terms while also providing three turns of Energy attachment to one of your Pokémon (typically Walrein). Furfrou is forgetable, but fills some extra slots for Basic Pokémon; if you want the Poké Balls back in the deck, flippy as they may be, Furfrou is easily the first to go. The Trainers provided, while not idea, give a nice coverage for things you might want to do with your deck, including drawing, searching for Basic Pokémon or Energy cards, getting Evolutions into play, and doing more damage.
Pokémon: 22
2 Pidgeot
3 Pidgeotto
4 Pidgey
4 Torkoal
3 Luxio
4 Shinx
2 Snorlax
Trainers: 22
2 Evosoda
4 Fiery Torch
4 Pokémon Center Lady
4 Pokémon Fan Club
4 Professor's Letter
2 Blacksmith
2 Roller Skates
2 Startling Megaphone
Energy: 14
6 Lightning Energy
8 Fire Energy
Strategy: To be honest, this is not one of the theme decks I would suggest doubling (or using). Torkoal is probably your strongest option of the easy to set-up attackers. It can take advantage of the Fiery Torch / Blacksmith combo to use its second attack in one turn (with an Energy attached from the hand as well). Luxio has a very strong second attack if you are losing, but it does require three Energy (at least two Lightning-type) to use. Luxio also has relatively low HP. If you make any additional changes, consider Exp Share to help power this Pokémon up while it sits on your Bench. It will take some time to set up Snorlax, but using Pokémon Center Lady can help keep it around longer than one might expect, so long as it isn't Knocked Out in one hit.