Theoretically, you could make a really good deck early on and win against the League, which is why the game doesnt let you do that and artificially gates your progress
Because Ghyrson inflicts the damage, his plinks are an inevitable route to victory via Commander damage
Cards x 10 Rule Index Cards x 3 *Same contents for any deck type
Theyve been seen in the Pokemon TCG before most recently, Radiant Pokemon are Shiny Pokemon under a different name, for example but Shiny Treasure ex brings together the biggest number of them, with lots of alternate art variants featuring Shiny Pokemon too
Retreat cost refers to the amount of energy cards needed to switch your active Pokmon with another one during the game
This does not match my playstyle, however