They don't share any abilities with the other creatures in the band (so banding a creature with flying with a creature without flying doesn't give the other creature flying), but if one creature is a band is blocked, the entire band is blocked
Box Topper Card Size Box Topper cards measure approximately 3.5 x 5 (90mm x 126mm) nearly twice the surface area of a standard card
After I became a dad, when my kids were little, we invited my dad to go with us to the Wright Patterson Air Force Museum
Granted, the removal isnt permanent so it doesnt hit as hard as some other effects but that might make it more acceptable at a casual table
It was very annoying, but I didnt encounter this issue while typing rules text, where it wouldve been a deal-breaker
This is because the card was only ever available to those who worked at the event when it was handed out