Brilliant, bbninjas! But I would ask a few questions:
What is a "fast engine" vs. a "medium engine"? Could you perhaps spell these out as partialTrainer/Supporter lists? Not familiar with the advanced jargon.
Why 4 Spirit Links or Crushing Hammers? Wouldn't that take up too much space?
Also, what do you mean by consistency vs. speed vs. disruption vs. support? Again, what Trainers/Supporters/Stadiums would be helpful in each situation?
Finally, how do you know when a deck is exactly right? People say one should practice, but how much practice is enough?
Haha, no problem!
1. A fast engine is one that is more aggressive; i.e. you try to get through your deck faster. A medium engine is one that is more conservative. The standard engine (4 Juniper, 4 N, 3 VS, 3 Ultra) is commonly played at a medium speed, while fast is played much more aggressively (discarding lots of cards to get cards you need etc). A engine that is made to be very fast is the Cancer Engine.
2. Four Spirit Link is the absolute, of course. You'd also only run equal to or less amount of Spirit Links for the amount of Megas you've used. If you run 4 Megas, however, you most often will only need 3 Links (as you dont normally power 4 Megas up), but if your run 3 Megas, I'd run 3 Links, as you often would power 3 Megas up. In decks that focus on disruption, you'd use lots of Crushing Hammers to maximise your disruption. See decks like Seismitoad-EX. Remember that you have around 30 Trainers to fill up. About a third will be draw, but what about the rest?
3. Consistency is basically making your deck more likely to draw what you need or get what you want when you want it. A speed deck would involve drawing huge quantities of your deck at a time (even 30+ cards!), however often require lots of items, and thus falls to Toad. And disruption deck would run a lot of cards that, well, disrupt your opponent's play. Making their hand low, removing energy and stopping the play of items is all types of disruption. Support cards are primarily cards that support your deck functioning, and relate to consistency.
Cards that improve:
Consistency:
- Juniper/Sycamore - Drawing 7 cards is the basis of your game
- N/Birch/Shauna/Colress - also allows you to draw lots of cards
- VS Seeker - To reuse supporters
- Jirachi-EX - Another way to get supporters
- Ultra Ball/Repeat Ball/etc - A way to get Pokemon without drawing them
- Skyla - A way to get any Trainer
- Random Receiver - Another way to get supporters
- Computer Search ACE Spec - A way to get any card!!
- Professor's Letter - To get energy when you need it
- The more of the same card in a deck, the more consistent it is to get that card, but the more one-offs, the less consistent your deck becomes
Speed:
- Acro Bike - Milling your deck + drawing a card
- Juniper/Sycamore - Drawing 7 cards is the basis of your game
- Roller Skates - Chance draw card
- Bicycle - Draw card
- Battle Compressor - can be used to mill deck to remove cards you don't need
- Random Reciever - A quick way to get supporters
- Trainer's Post - To grab even more cards in your deck
- Jirachi-EX - A quick way to get supporters
- Shaymin-EX - More non supporter draw
- Lots and lots of draw cards
Disruptive:
- Crushing Hammer - Discarding energy
- Enhanced Hammer - Discarding energy
- N - Knocks your opponent's hand down to lower amounts
- Red Card - Knocks your opponent's hand down to 4 cards
- Head Ringer/Jamming Net - Stops your opponent EX from having Tools on it, as well as has negative effects for your opponent
- Lysandre/Pokemon Catcher - Can be used as a stalling tatic, or to mess around with strategy (i.e. Trevenant XY)
- Startling Megaphone - Discards Tools of your opponent's
- Anything that annoys your opponent or potentially stops them from doing something
Supportive:
- Energy Switch - Moving energy to hit with surprise
- Switch/Escape Rope - Get Pokemon out of tough situations
- Lysandre/Pokemon Catcher - Allows you to bring out a Pokemon to get your last prizes, or bring out someone threatening
- Professor's Letter - To get energy when you need it
- Startling Megaphone - To prevent Garbodor, or remove Tools that could be dangerous
4. I don't think you can ever have not enough practice, especially with an ever changing format. I think a good deck is a deck that can beat various top tier decks (Yveltal, Seismitoad, Flareon, VirGen, Donphan, Primals, Metal, Fairy etc) over 50% of the time. When starting testing I suggest you take note of cards you don't often use, and lower or remove the amount you use, or cards that you need, but never seem to have enough when you need them, and maybe increase those. But to be honest, testing is really trial and error, and lots of experience.