I know I wont please all with my definitions, and I concede that it is probably impossible to agree on a concrete definition on this very vast subject
While it can be used to save a couple of creatures from combat or spot removal, there are really two main scenarios which justify including it
In other Pauper metas where control decks like Tron were dominant, this deck would have had zero chance of succeeding, but since the current Pauper decks are all creature-based, it makes sense the results it's been pulling off
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Its inclusion in Surging Sparks provides fans with a more accessible yet highly collectible chase option
Maybe you can find N's Reshiram from your deck with Zoroark's Trade ability and copy its attack a fitting illusionist trick