Much like Equipment, Auras, and traditional Vehicles, they risk clogging your hand if you draw too many without enough creatures to station them
Yes, it's a pretty pricey instant, but you can cast the card for free if your opponent searches their library this turn
The density is a little lower than we might want
This question is extremely relevant now that Treasure tokens are everywhere because they can be considered for affinity and the mana they produce
Lets prepare by going over what we already know: A (Re)Mix of Lands and Spells Supplemental sets are the perfect place for reprints of popular and/or useful cards, and with a set of as resonant and thematic as this were sure to gets plenty of hits from Magics past
Finally, there are Foil versions of each and, whether it can be counted as a rarity or not (as it doesnt originate from booster/starter packs) there are also Promo cards from events