The official Japanese Pokemon Twitter has revealed Espeon-EX from Rage of the Broken Sky. Thanks goes to Ryah R. for the translation!
[C] Miracle Shine: Devolve each of your opponent’s evolved Pokemon and put the highest Stage Evolution card on it into your opponent’s hand.
[P][C][C] Psycho Shock: 70 damage. This attack’s damage isn’t affected by any effects on the Defending Pokemon.
When a Pokemon-EX has been Knocked Out, your opponent takes 2 Prize cards.
Weakness: Psychic (x2)