Commander games are always filled with creatures that generate value just by entering and leaving the battlefield
MTG Final Fantasy is what happens when you combine one of the world's best card games with absolutely beloved JRPGs
Cards that dont require additional mana, like Sigardas Splendor and Cosmos Elixir solve this, but ultimately are a touch unreliable, especially in light of other card draw options in white
Mirror of the Forebears [Dragon Deck]: Any artifact that can go into any tribal deck
This works with all permanent types, and means that if you sacrifice a treasure token, you not only get the mana from the token itself, but Korvold gets stronger - and you draw a card, too
Money makes the world go round and all that