To understand the issue, I must first talk about the spell mastery mechanic
Noteworthy cards include Dialga ex, Palkia ex, and Pachirisu ex, alongside Generation 4 starters Turtwig, Piplup, and Chimchar, as confirmed by the short announcement trailer for Space-Time Smackdown
I would try to get Umbreon into the game early on so you can start confusing your opponent's Pokemon, but if you can't get it out early, I would recommend putting it on your bench, attaching three energy cards to it, and waiting for your opponent to put a Pokemon with a lot of energy cards attached to it in the active Pokemon spot, I would then move Umbreon into that active Pokemon spot and use Shadow Shutdown until Umbreon is knocked out or retreated, I would hope to get lucky and flip 2 coins so my opponent would have to discard all their energy on that active Pokemon
The combined illustration depicts when Dagger, whose true name is Garnet, calls upon the power of the great eidolon Alexander to defend her home, the Kingdom of Alexandria, from Bahamuts onslaught
Flash and Ward 2 takes this from playable to downright strong