This clever loop relies on Exchange of Words to fundamentally rewrite the rules of reality for your permanents, swapping the text box of Farrelite Priest with that of Tough Cookie. Because Tough Cookie's text box now belongs to the Priest, the latter gains the ability to animate your artifacts into 4/4 creatures for free instead of tapping for white mana. Meanwhile, Sam, Loyal Attendant and Tough Cookie itself both passively generate the Food tokens needed to feed this engine, with Sam's cost-reduction ensuring the machinery hums along smoothly.