In Commander, you see the Nymph in most Green-heavy lists as it allows you to ramp into bigger threats
Other cards like Sword of Fire and Ice or Sword of Feast and Famine might be more versatile and impactful in similar strategies
But you cannot choose to cast its Adventure side since its mana value is seven
Build up Blood tokens with Strefan, Maurer Progenitor, or build your Spirit squad with Millicent, Restless Revenant
Aetherworks Marvel digs down to find something gigantic, like Ulamog, the Ceaseless Hunger, to attack with
Critical mass of "cantrips", one-mana spells that draw a card on top of some other minor effect, is absolutely essential, especially when you also run Delver of Secrets, so having four copies of Mental Note matters even with the existence of the strictly better Thought Scour