Aside from the revised Duals and Gaea’s Crade (which are usually known to players even in casual pods), it usually is my Mox Diamond. It’s just the closest we got to actual moxen in EDH and when it hits the table, it usually evokes some reactions. People just don’t see them that often, I guess. Lion’s Eye Diamond is another good one, but that I only play in cedh decks, as it is just a combo piece. Mox Diamond can go in any deck that wants the speedup.

well, they still only use their own pricing engine (with merged prices from Amazon, I think), so their single prices are bonkers and so you can’t really use them to value your collection or your deck. Other than that, it is quite ok, but I still prefer Moxfield, because the statistics are really limited on deckbox. And it just doesn’t look as spiffy as the competition. I still use it to track my collection, though, because it is the most complete solution for that – even obscure sets and supplemental products can be selected for printings.