mcdonald's pokemon card 25th Anniversary Booster Pack clear acrylic holder that perfectly accentuates the stunning visual design and character artwork New in Japan: McDonald's Pokemon

Yes, in fact, they make up the bulk of these boosters

The other use I can think of is that Karn's card draw isn't worded as "drawing," so if you're a horrible person and want to lose your friends, you can pair Karn with mean cards like Possessed Portal or Omen Machine to lock them out of the game while you keep your hand nice and full

Glimmer Seeker (DSK-014) - Duskmourn: House of Horror Glimmer Seeker (DSK-014) - Duskmourn: House of Horror Wizards of the Coast This item is like new, pulled from a sealed pack

At this point its basically a bulk rare

Bristly Bill does a great job circumventing one of the issues with counter doublers that need another source to add counters in the first place