Agent of the Iron Throne is a uncommon Legendary Enchantment — Background card from Commander Legends: Battle for Baldur's Gate (CLB), collector number 107. Current market price: $0.48 (foil $6.37), TCGplayer market prices via Scryfall.
Commander creatures you own have "Whenever an artifact or creature you control is put into a graveyard from the battlefield, each opponent loses 1 life."
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