Each also has a FLIP effect (usually interaction), and a condition to flip in response to something happening
Those both go to your hand, but guaranteeing land drops is crucial, and youre probably getting some other benefit from the artifact sac outlet you used to pop the Wellspring
Too Few Lands Fix: Many new players run 32-34 lands
With Master Duel being best-of-one, this makes Numeron even better when compared to a TCG duel
Especially against inexperienced players that will fire off a Wasteland at their first opportunity, Stifle generates a similar amount of tempo compared to Stifling their fetchland, but preserves the typical fragile manabases Stifle-based decks run
Theres a unique feeling of universal benefit from dungeons, too