There is a very frustrating trial requiring a provided sledgehammer (in a chest). Once the sledgehammer is broken (and it isn’t a trivial trial so it will break) you need to find another one elsewhere.

What about undergoing a cosmonaut training ? It could help as the problematics in 0G are similar.

I don’t see the issue in betting on your team, especially if the team ends up winning. The issue would have been if he did bet on his team defeat.

Are you sure it’s tea and not psychedelics ?

It could be done with yugioh boosters (and generally with any TCG in which the rarest cards are foil cards). The general rule of thumbs is to NEVER buy bossters from an already opened booster box, for any TGC (except magic maybe, because rares aren’t necessarily foils).