This is one way that Non-Active Players can cast creatures during their opponents turns
Rayquaza's second move is called Twister, and for four colorless energy cards this move does 50 damage, however when you use this move, you have to flip two coins, if both are tails, this move does nothing, for each heads you flip you may remove one energy card from the defending Pokemon
I wont delve too deeply into OTJ Limited right now (wait for my Draft Guide in a couple weeks), but I expect that crime will have a similar dynamic to Bargain in Wilds of Eldraine
Ive even begun to frequent the local shop for game nights
Signets and Talismans only provide two colors of mana, and common land ramp spells, like Rampant Growth or Sakura-Tribe Elder, can only fetch out basic lands