Good old Sol Ring - the most played MTG mana ramp card in Commander, because it's the most played card in Commander, full stop
not in a worst of the best fashion but an I would rank this #53 if that wasn't logically impossible kind of way
Mirror Mastery Riku of Two Reflections was one of those generals I remember a lot of players clamoring for when the set was being previewed

Rarity: M Cost: 2WW Pow/Tgh: 3/5 Card Type: Legendary Creature - Phyrexian Praetor // Enchantment - Saga Artist: Magali Villeneuve // Magali Villeneuve Name: Elesh Norn // The Argent Etchings Finish: Foil Card Number: 0012 Set Name: March of the Machine Related Products Seal from Existence March of the Machine Light Play, English 1 In Stock Light Play, English 1 In Stock Light Play, English 1 In Stock Thalia and The Gitrog Monster March of the Machine Light Play, English 3 In Stock Light Play, English 3 In Stock Light Play, English 3 In Stock Grafted Butcher March of the Machine Light Play, English 47 In Stock Light Play, English 47 In Stock Light Play, English 47 In Stock Invasion of Kylem // Valor's Reach Tag Team March of the Machine Light Play, English 4 In Stock Light Play, English 4 In Stock Light Play, English 4 In Stock Wrenn and Realmbreaker - Foil March of the Machine Light Play, English 3 In Stock Light Play, English 3 In Stock Light Play, English 3 In Stock Furnace Gremlin - Foil March of the Machine Light Play, English 5 In Stock Light Play, English 5 In Stock Light Play, English 5 In Stock Island (285) - Foil March of the Machine Light Play, English 20 In Stock Light Play, English 20 In Stock Light Play, English 20 In Stock Treasure (020) Token March of the Machine Light Play, English 4 In Stock Light Play, English 4 In Stock Light Play, English 4 In Stock

Now we need some Mrs
Fun fact for Commander players, these fetch lands can be played in any Commander deck since lands have no color identity and there are no mana symbols on these cards