That Feebas reminds me of this Himeno Psyduck
By understanding the patterns, you can avoid buying at the peak
That'll also trigger Brinelin a total of four times (one for the Mnemonic Deluge, then the three Prying Eyes, who still have a combined mana cost of six even if you don't have to pay it), which could severely slow down your opponents
Most energy-acceleration strategies you'll see on this list need to attach the energy onto a Pokmon, but Gholdengo ex only cares about getting it into your hand
Rundvelt Hordemaster Goblins, goblins everywhere, but not a drop to drink
Survival feels very connected to Duskmourn's horror movie troping, which is the reason it's an ability word and not a keyword ability