Charmed Pendant is a rare Artifact card from Odyssey (ODY), collector number 298. Current market price: $1.11 (foil $19.05), TCGplayer market prices via Scryfall.
{T}, Mill a card: For each colored mana symbol in the milled card's mana cost, add one mana of that color. (Activate only as an instant. For example, if the card's mana cost is {3}{U}{U}{B}, you add {U}{U}{B}.)