There are a bunch of cards from the ex sets that connect in a similar way to the Skyridge cards, by being based in a region exclusive to the tcg called Holon which has structures that repeatedly appear in the artwork
These arent modifications these decks will need to make, either, but rather cards theyre already playing
These two starters appear to be coming as Wonder Picks based on the promo logo on them
12 km Egg Acquired by defeating Team GO Rocket Leaders
for the rest of this turn after this card resolves, you cannot Special Summon monsters, also Special Summon 2 monsters from your Deck, with the same Type, Attribute, and Level as that monster, but with different names from each other and that monster
Sure, your opponent might be ahead on board, but what if they draw several lands in a row