This is where our deckbuilding options really open up
Yorion was the premiere companion for 4-color Modern decks revolving around Omnath, Locus of Creation until it was banned, mostly because of the decks rising popularity, but also dexterity issues given the high amount of shuffling in a format full of fetch lands
Kindly note that the probability for the random card in each set may not be accurate, but it should give you a rough idea on how difficult it is to find a card like Luxray GL LV
But I cant say that my curiosity to get into Pokmon cards is all for nostalgia, as after all, Im a fan of the main games today and can name most of 1025 of the creatures (maybe more now when you read this)
The way each new card empowers all existing cards is great for smoothing out draws in a 99 card singleton list, but can make it hard to balance in Constructed formats, especially Standard