Minimus Containment is a common Enchantment — Aura card from Commander Legends: Battle for Baldur's Gate (CLB), collector number 34. Current market price: $0.18 (foil $0.29), TCGplayer market prices via Scryfall.
Enchant nonland permanent Enchanted permanent is a Treasure artifact with "{T}, Sacrifice this artifact: Add one mana of any color," and it loses all other abilities. (If it was a creature, it's no longer a creature.)
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