Ill go over a few examples of why some specific cards have been banned: Treasure Cruise + Dig Through Time [mtg_card]Treasure Cruise[/mtg_card] and [mtg_card]Dig Through Time[/mtg_card] are examples of cards that were individually too powerful for Modern (amongst other formats)
V-UNION cards have been introduced in Greninja / Mewtwo / Zacian V-UNION Special Collection and have gotten new cards in sets VMAX Climax and 25th ANNIVERSARY COLLECTION
#6 there's like, four different types of holofoil that they've used recently for these promos, so of course they choose the one that's identical to the one from the set #7 thank you pokemon, very cool
Sketch card purchases are limited to no more than TWO PER CUSTOMER
Chaoslace and Thoughtlace could play shenanigans with Red Elemental Blast and Blue Elemental Blast
Ardenn, Intrepid Archaeologist also says you can eliminate the best blocker with Pacifism, and you can save sweet auras like Staggering Insight that are attached to a creature you need to sacrifice