throne of eldraine cards mtg Happily Ever After [Throne Eldraine] Mint / near mint condition trading card Throne of Eldrain cards with

The best examples are in the Ravnican Simic cards, which usually have a theme that benefits from manipulating counters

I see big upside for Bristlebud Farmer, which of course gets infinite mana with Krark-Clan Ironworks and something like Emiel the Blessed

Amazon has a lot of options available, and as long as you're getting one with good reviews and not at bottom-of-the-barrel prices, you should do all right

Others need to ramp really, really hard, like my Vaevictis Asmadi, the Dire deck, which runs 40 Lands and 20 ramp spells, for a total of 60 mana sources

Other strategies rely on locks that prevent players from taking real actions