On average, then, one in five packs will have a rare or mythic worth $10 or more
For true duals, Tundra and Volcanic Island give you smooth untapped mana early, while Hallowed Fountain and Steam Vents are the backup shock lands when you need extra flexibility
If you don't cast the card, it remains exiled with no time counters on it, and it's no longer suspended
The only precedent we have for this is Oath of the Gatewatch, which provided two different pieces of art for Wastes
While its Modern hype has dropped off since Glimpse of Tomorrow decks were in vogue, It sees play as a staple in a lot of cEDH decks, where making a Lotus Petal twice for a fetchland is a big tempo play
No need to bring any old cliches back from the dead