What it does
"Sell Contraband" isn't a standard Magic keyword or ability—it doesn't appear in the comprehensive rules or on any official card. It sounds like it could be flavor text, a fan-made mechanic, or something from a non-Magic game, but it has no defined function in Commander or any other format.
If you encountered this on a card, double-check the exact name and wording—it may be a misremembered ability (perhaps confused with mechanics like "Treasure" tokens, "Plot," or set-specific actions from places like Streets of New Capenna, which leans into crime-and-contraband flavor).
For an accurate ruling, look up the specific card on Gatherer or Scryfall using its precise name. If you tell me the actual card or the real keyword you're thinking of, I'll gladly explain how it works and its Commander implications.
