# Noxious Bayou Noxious Bayou represents an interesting footnote in Magic's design history as part of the Mystery Booster Playtest Cards from 2019. These cards were experimental designs never intended for standard release, making them inherently collectible for players interested in what-if scenarios and design exploration. Collectors typically view playtest cards as curiosities rather than competitive staples. The nonfoil-only printing limits variant appeal, though that's standard for this supplemental product. The card's actual gameplay impact matters less than its historical significance—it documents Wizards' internal creative process during a specific moment. For collectors, Mystery Booster playtest cards occupy a niche between novelty and legitimacy, valued more for their unique origin than mechanical power.