These cards all serve various purposes but are incredibly important for tipping a match in your favour
The highlights of these are cards depicting the Shiny versions of Rayquaza, Deoxys, Ho-Oh, Kyogre, and the biggest get of the bunchLugia
It fuels some of the strongest Pokmon in the Lost Origin (including a handful of basic, single-prize Pokmon) and, as such, many of the best cards in the new expansion are centered on this mechanism
This means that we dont really get too many options of possible commanders for a coin flip EDH deck
eBay is not as helpful as vendors in this case
Focus on not giving any opportunities for them to get a foothold and you will eventually win with Jace milling them out, the Excruciator combo, or a pair of Faerie Masterminds eventually pecking them to death as you simply draw cards with it run them out of relevant threats