Blue/green Threshold and/or Madness was the defining deck of Standard when Odyssey Block was legal, and a fast way to achieve threshold will go a long way to powering up cards like Werebear and Centaur Chieftain to their full potential
You can cast Failure to bounce a spell and then Comply naming the spell, and your opponent can't cast it on their next turn, but Reflector Mage (an uncommon itself upgraded from common thanks to the "can't cast" clause) comes along with a very blinkable and close to on-curve body, which makes it much, much better than Failure // Comply
Jungle Shrine ($2) The only other surge foil is from Fallout, and its $12
As I mentioned, this list isnt entirely exclusive because some cards dont have a market price yet, so always give an eye to current listings when trying to evaluate your booster pack pulls
The King is a six-drop 4/5 with a two mana tap ability to bounce an opposing green dork on top of their library, which is pretty powerful given the massive number of green dorks played since the color is so heavily played here in Commander
Since Psychic Pokmon were already so ubiquitous and versatile, turning other Pokmon into borderline Psychic-type cards instead of Fairy-type cards only bolsters their ranks