Marching Duodrone is a common Artifact Creature — Construct card from Commander Legends: Battle for Baldur's Gate (CLB), collector number 321. Current market price: $0.16 (foil $0.20), TCGplayer market prices via Scryfall.
Whenever this creature attacks, each player creates a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")
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