Its true, you have to return a land to your hand, but this is often irrelevant in the mid to late game
Like Archmage Emeritus, sharing a mana cost with your Commander is also a downside though
Jegantha, the Wellspring The gigantic mana dork, Jegantha, the Wellspring is a great build-around for fun spells like Chromanticore and Maelstrom Archangel, or three color charms such as Abzan Charm and Brokers Charm
Fallen Empires Significant cards on the list: Elvish Farmer $2 Rainbow Vale $2 Calling these cards significant is rather dubious
Invasion of Ikoria has the same effect for only a single extra green mana, with the added benefit of being able to transform into Zilortha, Apex of Ikoria, which can allow you to defeat your opponents way more quickly
How Many Creatures Should You Put in a Spellslinger Commander Deck