Foundry Inspector and Etherium Sculptor turn your artifact creatures into cheaper spells, or even free ones
Most of that excitement, unsurprisingly, comes from its second ability
The ways, for instance, different cards from Sleeping Beauty will accentuate distinct aspects of Princess Auroras personality, or how Lorcana consistently pulls from unexpected places one card, for instance, may reference the tabard from the Mickey Mouse-starring The Three Musketeers, and another may simply point to the Beasts ability to throw a tantrum
You don't have to choose every permanent or player that has a counteronly the ones you want to add counters to
You also get the option of getting Eternal Witness and doing it again for another seven or just throwing something back on top of their library and slowing up their tempo
The latest Jenova deck from Final Fantasy obviously likes that you can add a little sauce to your main course of refill draw, but really you have to look at this as a flexible draw engine for archetypes outside of Humans that usually get this tech