Im not sure what the statistical distribution of emblems are compared to other token types but I believe they are probably the rarest type of token to crack in pack
Utrom Monitor In my humble opinion, the best card from the set for Pauper
The cost of discarding a card can also be a great way to get a big creature out of your hand for a cheaper reanimation spell, allow you to set up evasion with a creature like Filth, or just turn that land you dont need on turn 10 into whatever the biggest threat in your graveyard is instead
Anything that hits wider is useful, and Riddlekeeper could be a player in your Bruvac the Grandiloquent, Szadek, Lord of Secrets, or whatever mill commander you're running
Some Japanese Gold Star cards were also exclusive promotional rewards, making them even rarer
Amulet Titan is considered one of the most complicated decks (if not the most complicated deck) to play in the format, so mostly only hardcore aficionados with many reps under their belt dare to touch the deck