Generally, the main body text (which includes the card's abilities and flavor text) appears to be approximately 8-9 point size for shorter texts and can be smaller for longer texts
Gemstone Caverns is a wild land, which if it's in your opening hand, and youre not the starting player, you can just start the game with it in play and with a luck counter on it
In an ecosystem with Set Boosters and Draft Boosters, customers don't get the full experience
Here, my primary concern isn't speculators or collectors but the poor college kid on Reddit trying to put together a Modern deck that ends up with fake Mox Opals off eBay, or the new player who thinks they are getting a good deal on some Modern staples to build their collection off Craigslist and hasn't played enough Magic to realize the cards are fake
When Dina's first ability resolves, each opponent loses only 1 life, no matter how much life was gained
Curie, Emergent Intelligence Curies activated ability is really neat, but keep in mind its basically a one-shot (unless of course Curie is your commander and ends up back in the command zone)