(Not a complete 60 card deck)
4 Talonflame
3 Froakie
4 Frogadier
4 Greninja
3 Greninja Break
1 Minccino
4 Professor Sycamore
4 N
1 Ace Trainer
1 Fisherman
4 Dive Ball
2 Ultra Ball
4 Bursting Balloon
2 Super Rod
# VS Seeker
# Trainers Mail
4 i Faded Town
2
Splash Energy
8 Water Energy
Greninja is actually quite a successful deck and its relatively cheap-ish to make as it doesn't include Shaymin EX (unless you want to play a copy by choice) Greninja Break is going for about $16 dollars a copy depending where you look, which isn't too surprising as it's an established Archetype and Talonflames are about $5.
The strategy of the deck is to ultimately set up at least 2 Greninja Break and overwhelm your opponent with its Ability Giant Water Shuriken; discard a water energy from your hand and put 6 damage counters (60 dmg) on one of your opponents pokmeon. If you have 2 Greninja Break you can do 120 damage to a pokemon at the cost of 2 Water Energy without even attacking yet. and if you do atttack you can do 80 damage with it's Moonlight Slash attack if you return a water energy attached to greninja back to your hand. So potentially 200. and of course with 3 Greninja Break on the field the potential damage increases. Or you could not use Moonlight Slash and use it's first attack Shadow Stitching which does 40 damage and shuts off all pokemon Abilities on your opponents side of the field; so pokemon in their hand, or the field and in their discard pile cannot use their Abilities. This combined with Giant Water Shuriken can cripple a number of decks and apply a great deal of pressure. Volcanion EX can't use Steam Up to increase it's damage output, Players can't use Shaymin EX to draw cards even against opposing Greninja Break decks, they can't use Giant Water Shuriken, but chances are neither can you if you're up against opposing Greninja Break decks.
Talonflame is the foundation for this deck your early game set-up is much better whenever you start with it. It's attack Aeroblitz does 40 damage and can allow the player to search their deck for any 2 cards, it also has 130 HP and a free retreat cost. This card allows you to grab whatever resources you need to ensure you can get a Turn 2 Frogadier on the board and you can use Water Duplicate which allows you to search for upto 3 Frogadier and place them directly onto your bench, the following turn you evolve your Frogadiers into Greninja. Why play 3 Froakie? because you'd rather start with Talonflame, however adding a 4th Froakie is acceptable.
Minccino is an optional pokemon. It's only use is to discard Tools from your opponents pokemon, this is mainly for Garbodor which has an Ability that shuts off all other Pokemon Abilities as long as it has a Tool attached to it, which means it can shut off your Giant Water Shuriken which is bad as that's where alot of Greninja's damage comes from. So discad their Tools with Minccino and get back access to your Abilities. This can also be used against Mega EX decks to discard Spirit links, or anything that uses or relies of Fighting Fury Belt and Float Stone, but you'll very very rarely find yourself using Minccino for anything outside of Garbodor.
There are no quantity numbers next to either Trainers Mail or VS Seeker, you should just try to obtain as many as you can. you can get 2 of each, then work on getting another 2 later on down the line; These cards a quite pricey but they provide a great boon to a decks consistency and spee
This deck is inherently slow due to its set-up and will often be behind on prizes before it's ready to go, but with a combination of N and Ace Trainer to reduce the hand-size of your opponent, you can easily swing the game into your favour late game. Bursting Ballon is an item card that places 6 damage counters on your opponents active pokemon if they attacked a pokemon with Bursting Balloon attached to it. It's an easy way to rack damage up on your opponents pokemon early and mid-game to allow Greninja an easier time getting KOs as this deck has very low damage output early game having a card that punishes your opponent for attacking is a great offensive and defensive tool, if they don't want to incur the damage then they need to either hit around the pokemon or just not attack and pass their turn which can potentially be a big deal. Fisherman grabs energy from the discard pile for more Giant Water Shuriken plays. Faded Town puts damage counters on Mega EX Pokemon inbetween turns which makes hitting for specific damage numbers needed for KOs a little easier, it is of course a deck card against anything that isn't a Mega EX deck except for just being a counter stadium which isn't too bad. Splash Energy gets Greninja and any other pokemon below it back into your hand when it's KO'd which is great for streaming more Greninja into play.
