I've encountered a slightly weird problem with Urza's Bauble. I was playing against a friend and in order to combo him on his upkeep I had to resolve 70 triggers, which required picking a random card from his hand 70 times. I checked with a judge and I do actually need to choose a random card 70 times unless my opponent explicitly allows me to shortcut this action (in this case it was just a friendly game, so I was able to do this). They are allowed to require you to resolve each trigger, though, which means Urza's Bauble might be a little problematic in tournaments if your opponent dislikes you. There are no special rules for choosing yourself - you might still be required to perform n die rolls to choose a card.
I don't know how relevant this actually is, but I thought it was kind of neat. Maybe every judge you ask would rule in favour of allowing the infinite, maybe some judges would give you a warning for slow play.
I don't know how relevant this actually is, but I thought it was kind of neat. Maybe every judge you ask would rule in favour of allowing the infinite, maybe some judges would give you a warning for slow play.