While some of the promo cards are presented in the same fashion as the rare one-star cards, they do not have a rarity since they can't be obtained through normal packs
TCG went through a massive overhaul during the 5Ds era
Poison Barb could be even more annoying than Rocky Helmet, even if it's not a straight upgrade, but it's going to be huge for the Darkness Pokmon from the last set
Jor Kadeen can be buffed with equipment and auras to make it a significant threat thanks to trample, especially with commander damage
This is two mana cheaper than Birthing Pod, and can act as the less scary version
As the game evolved, boss monsters needed to change with them, and these cards gained more powerful effects, as their stats were less important when players needed to control the game state