poliwag pokemon card (23/108) [XY: Evolutions] the Defending Pokémon is now Asleep Poliwag (62/75) [Neo Discovery Unlimited]

There's some great cards in here that will be useful in your Rise of the Floodborn collection, particularly the Merlin and Madam Mim cards, but otherwise this is the least competitive deck you can get.

Dhelmise 070/159 Loading

A 4-mana 3/3 menace that makes a 1/1 that cant block is pretty decent

Dark Pokmon have risen to be worth some incredible prices, although this isn't entirely out of the ordinary for the oldest and rarest of Pokmon cards

Small and Medium Battle boxes can be bought at /warp CardShop, one of each per player (more may be obtainable in the future)

Morbid abilities are ready to take advantage though