In fact, apart from Blackcleave Cliffs, the 20 most played lands in Modern have all been printed or reprinted since Khans of Tarkir , and even if we expand out to the top 50, only a handful of fringe lands (Tolaria West, the rest of the ally fast lands, Valakut, the Molten Pinnacle, and Gemstone Mine) don't have a relatively recent reprinting
My best example of great redundancy is my Grumgully, the Generous deck
This is a cheap card, but you really dont want to play it before you have six lands so you make copies of Scute Swarm instead of the Insect tokens
Market Value (based on PriceCharting.com ): Ungraded: $329.06 Grade 7: $290.00 Grade 8: $304.29 Grade 9: $348.56 Grade 9.5: $500 PSA 10: $788.97 The second most valuable card to come out of this set is Eevee #188, an Illustration Rare that currently has a market price of about $80, give or take
This is true of any planeswalker that costs this much mana thats worth playing, but its important to point out that Elminster does check this box