In a singleton format you have to run a set of cards that all fulfill the same basic function, so instead of running 4 copies of Harmonize, you might run Harmonize, Greater Good, Beast Whisperer, Return of the Wildspeaker, Garruk, Primal Hunter, Shamanic Revelation, Soul's Majesty and Rishkar's Expertise
Even among these relatively new collections, you can find enough expensive chase cards to fully fund a pension plan and then some
Absolutely, it is better than Wild Guess would be in this list
Lands are very hard to interact with, and you have mana fixing and land fetching here as part of the card and its mechanics
Swipe up on your card to send it away and you will receive the offer card in return
With power and toughness equal to the number of creature's in its controller's graveyard, Old Stickfingers costs two mana and X to play