difficult

try opening with gastly, and use all three variants of gengar in the best way possible

Darkrai ex and Magnezone has positive matchups against most top decks, including Palkia ex decks, and other Darkrai ex decks.

Druddigon is the best early-game stall Pokemon, which is perfect for Darkrai ex and Magnezone which are rewarding payoffs for the late-game. Druddigon's Rough Skin + an Energy attachment to Darkrai ex will result in 40 damage per turn, all while Magneton charges in the Bench with Volt Charge.

The deck uses Space-Time Smackdown Magnemite over Genetic Apex Magnemite because of its Attack's Colorless Attack Cost, which it can use for Darkness Energy.

¡Only Dark Energy!

The strat is simple: 

1. Get Hypno on the Bench and Weezing (with 1 dark energy) on the Active Spot.
2. Use Hypno's ability and attack with Weezing.
3. Let Darkrai EX accumulate energies on the Bench and/or give Weezing a Rocky Helmet for extra chip damage.
4. Enjoy dealing 50-90 damage per turn plus having a 62.5%-75% chance to avoid damage on your turn, every turn (once set up).

Extra tips:

Stand with Exeggutor ex until you get Pidgeot ex, recover with Erika and use DE rocky helmet to make damage. 

1 Prize point deck which aims to counter EX that rack up energies like Celebi and Gyra EX. Deck is still able to take down Charizard and Mewtwo EXs after they discard 2 energies with the help of chip damage of Druddigon and Greninja. It can be inconsistent as you may not get to needed stage 1 or stage 2 pokemon in time, but is really fun to punish those big energy EX pokemon.