The type of gameplay centered on each color remained consistent with how Five Magics had been and with how Magic: The Gathering would stay in the future, such as red representing aggressive attacks
The Pokmon Company has made noises about trying to deal with the shortages, but it's been reusing the exact same statement with minor tweaks for months, so we're not reading too much into that
Additionally, every time the player leaves the Card Shop, the game will say that a new pack has been added to the card list, despite nothing actually happening
Start with both on the battlefield, then activate Kiki-Jiki, Mirror Breaker to make a copy of Seeker of Skybreak
You can easily run cards that will abuse it, from Sakura-Tribe Elder or Bone Shredder to Attrition or Perilous Forays