So far, the only information we have is that they are the guardians of this region
There is a good reason I always check when a card costs less on Card Kingdom the scrapers on EDHREC are good but only as good as the API they access
If we dont talk about what we dont like, how can anything be corrected
Retreat cost refers to the amount of energy cards needed to switch your active Pokmon with another one during the game
Thankfully, this Wildcard acquisition avenue is very easy to explain since its simply math and chance
And last but not least, since we are discarding cards as well, we have a backup plan that allows us to play those cards in the bin: Past in Flames and Yawgmoth's Will are insane in terms of provided advantage, we get new cards, its almost if we didn't even had to discard anything to get those cards and we even get to use them again if we want to