To say garbodor and nuff said isn't proper, please explain.
Idk about garbodor and mewtwo, both mega's rely too heavily on abilities to run the deck. Yveltal maybe, but with zoroark being a thing hex becomes much easier to play.
Espeon EX bats maybe, but jolteon EX/magnezone is a lot better.
1. Max Elixir, "Look at the top 6 cards of your deck. You may choose a basic Energy card you find there and attach it to 1 of your Basic Benched Pokemon. Shuffle the remaining cards back into your deck" For decks that run a lot of low energy attackers this card comes in handy for setup, this card also comes in handy in times when your dead drawing as an easy way to reshuffle while also having access to an energy, this is possibly the most versatile item card out of the set.
2. Fighting Spirit Belt, "The Basic Pokemon this card is attached to gets its max HP increased by 40 and its attacks do 10 more damage to your opponent’s Active Pokemon." This makes decks a lot more bulky making basic EX's hit 210-220 hp or wailord hit 290 hp, power creep hits the game hard with this card making it a hard choice for switching muscle band out in some to most decks, some decks can afford to lose 10 while others cannot.
3. Frogadier/greninja, the deck is easily a tier deck coming right out of the set, also being an non-ex and able to hit for 180 dmg per turn before attack makes the deck very easily a good deck (this was also a popular deck when garbodor was playable), plus this deck use's all water mechanics.
4. Sudowoodo, [F][C] Let’s Imitate: If your opponent used a Pokemon’s attack during his or her last turn, use that attack as this attack. Let's say manectric used assault laser, ohko manectric, 30 dmg everywhere, 30 dmg everywhere, etc. Sudowoodo has a versatile use in this format I wouldn't be surprised to see this card in some decks, or all that play bronzong/smeargle.
5. Trevenant BREAK, Darkness weakness is a bit of an issue due to the current tier 1 and tier S for both extended and standard. 30 dmg to everything, then gengar which has the attack "if your opponents pokemon has 30 dmg on it that pokemon is knocked out" is pretty dark with xy 55 trevenant trainer lock you put the break on top of, hitting a turn 1 wallys for the trainer lock is fairly consistent, then the turn after you break, 1 psychic and a dimension valley and 30 to everyone.
Honorable mentions: scizor/mega scizor, Fire is to popular in both standard and extended to think about playing scizor and calling it good, entei in standard and vespiquen/flareon, not worth, but so totally worth collecting. Burst balloon, thanks to garbodor more people will play more tool hate cards making this 1 turn lysandre into something else makes the card to easy to counter but worth teching in something like toad/bats for extended. Delinquent, this card will most undoubtedly see play, the same kind of play I see in most decks, at the mid to bottom tables (that's right, I'm talking to those that put 3 giovanni's in their deck, this is a thing a lot of players I talked to noticed, myself as well), or 1 of only used to get past those tables in a top 8 deck. Reverse valley, pokemon "we needed more cards for darkness pokemon to deal more dmg" yup. gyarados/mega gyarados, manectric is everywhere and it does well in multiple variants, gyarados is not as fast as mega ray(c) which makes it hard to counter manectric and night march which have 1-2 energy attachment versus 4 before stadiums, pokemon, and trainers.