Mew (Prime) – Psychic - HP60
Poke-Body: Lost Link
This Pokemon can use any printed attack on the Pokemon in either player’s Lost Zone. (If it doesn’t have the necessary Energy attached to it for an attack, it can’t use it.)
[P] Read and Place: Place 1 Pokemon card from your deck in the Lost Zone. Shuffle your deck afterward.
Weakness: Psychic (x2)
Mew Prime is a yet to be released card that creates a very interesting strategy, by lost zoning a pokemon t1 and then attacking with mew prime with then on can make for an interesting and usually quick paced game. Here's the main idea, look at the opponent's field, determine if they're playing sp or not. IF they're playing SP, lost zone Machamp, and proceed to use take out. If they're not playing SP, I recommend lost zoning jumpluff and keeping a full bench. There's also a few other pokemon that can be Lost zoned as techs, including Umbreon UD, Gengar SF, Gengar Prime, and basically any other pokemon with an attack for one energy and can help out. These are good, but I suggest mainly sticking to machamp and Jumpluff.
A problem you might first note is Mew Prime's very low 60hp, now if we're using take out against SP every turn, then it's simply a race, and probably one we can win, considering all the set up it takes to get an SP ready to attack compared to mew prime's non-Lv.X one energy attack. Pokemon Rescue is also an essential tool, as you'll more than likely be in this situation of racing with the opponent since mew prime's HP is so low. Fishermen might be nice, but I suggest making sure the list has plenty of energy and running some interviewer's questions, Aaron's Collection might also be the play as well.
There are 3 main problems I see for Mew prime. Mewtwo, Donphan, and Dialga. Now for the first two, one of my recently favorite techs takes care of these fairly well. Abomasnow SF, it's able to KO mewtwo without even being hit back, and can tank out donphans pretty easily, a 2-2 line is definetely recommended . For Dialga, I suggest Blazekin FB, there's not a lot that can deal with Dialga outright like Blazekin can, and it's another incentive to run Aaron's Collection.
I highly suggest running snowpoint temple, I know it's not very popular, but if we're playing against sp, we're going to be using take out so that won't be a problem, and if your opponent can't manage to consistently do 80 damage a turn then you'll more than likely get ahead in prizes. Also, it can help against the donphan matchup, forcing them to put up on an expert belt in order to keep the OHKO going, you'll make up for the prizes since you'll still 2HKO him from mass attack.
Machamp isn't an issue, because not only does Obama deal with him just fine, we're hitting him for weakness so it's not that big of a deal, if it really worries you that much, run a luxario gl, that way you'll only have to mass attack for 70 instead of 100.