For Magic: The Gathering , Yu-Gi-Oh
Peonia is the safety net that this deck needs to protect itself from losing games to prizing cards that are a part of the loop combo
Locations can be discarded by challenging from the other player as well, but also if it remains out, you potentially can gain from it at the beginning of your turns
Oona, Queen of the Fae Oona, Queen of the Fae not only takes resources away from your opponents, but it can also make you a lot of tokens, especially if youre facing at least one mono-color deck
New sets timed with game launches drive demand for cards featuring fresh characters, which often makes them instant chase cards
An economic downturn or Pokemon bubble correction could move Evolutions box prices down 30-50% before recovering