The Aurora Dreaming Guardian card will be released as part of the Disney Lorcana Booster Packs which contain cards of just one ink colour - and First Chapter Starter Sets, with each set features cards from two of the different ink colours, which are set to be released in August.
Even so, Espeon fans are out there, and this EX card can un-evolve your opponents cards

A Girl and Her Dogs (playtest) A Killer Among Us A Most Helpful Weaver Aang, Airbending Master Aatchik, Emerald Radian Abdel Adrian, Gorion's Ward Abian, Luvion Usurper (playtest) Abstruse Interference Abundant Countryside Abyssal Harvester Abzan Ascendancy Abzan Monument Academy Manufactor Accomplished Automaton Acererak the Archlich Aclazotz, Deepest Betrayal Adagia, Windswept Bastion Adanto, the First Fort Additive Evolution Adeline, Resplendent Cathar Adeline, Resplendent Cathar Adipose Offspring Adorned Crocodile Adorned Pouncer Advent of the Wurm Adverse Conditions Aerie Worshippers Aether Channeler Aether Chaser Aether Herder Aether Inspector Aether Poisoner Aether Refinery Aether Swooper Afterlife Insurance Agate Instigator Age of Ultron Agent 13, Sharon Carter Agents of HYDRA Aggressive Biomancy Ainok Strike Leader Air Nomad Legacy Ajani Fells the Godsire Ajani Goldmane Ajani's Chosen Ajani's Last Stand Ajani, Nacatl Avenger Ajani, Nacatl Pariah Ajani, Outland Chaperone Ajani, Strength of the Pride Akim, the Soaring Wind Akki Ember-Keeper Akoum Stonewaker Akroan Crusader Alandra, Sky Dreamer Alela, Artful Provocateur Alela, Cunning Conqueror Alenni, Brood Recruiter Alharu, Solemn Ritualist Alicia Masters, Skilled Sculptor Alien Invasion Aligned Heart Alirios, Enraptured Alistair, the Brigadier Alive // Well Alive // Well Allied Teamwork Alquist Proft, Master Sleuth Altar of Bhaal Altar of Bhaal Altar Ibn-La'Ahad Ambassador Oak

To make all those Treasures, you can use things like Riveteers Requisitioner , Sticky Fingers , Big Score , Jewel Thief , and Gala Greeters
A copy or two of Aeve, Progenitor Ooze would be an easy way to make sure that your board is big enough to close out the game, even through a bunch of blockers