The passion that drives a $3 million sale is the same passion that fuels the Creator Economy
And for cards wanting to come back from your graveyard, namely creature kill and countermagic, Spell Counter and Kill Destroy are pretty strong
Sure, all the standard artifact-sacrificing aristocrats strategies apply, but they'll rarely require the same spells to synergize
That doesnt prevent cards like Hardened Scales from doing their thing, though
Impulse gets you through your deck quickly, allows you to quickly search for an answer to an impending problem, and does it all so effectively that almost any blue deck capable of running Impulse in any given environment has done so without hesitation
O'aka, Traveling Merchants most probable home is in saga/summon-heavy decks to grind more value and draw cards