Doors of Durin is a rare Legendary Artifact card from The Lord of the Rings: Tales of Middle-earth (LTR), collector number 650. Current market price: $3.06 (foil $4.63), TCGplayer market prices via Scryfall.
Whenever you attack, scry 2, then you may reveal the top card of your library. If a creature card is revealed this way, put it onto the battlefield tapped and attacking. Until your next turn, it gains trample if you control a Dwarf and hexproof if you control an Elf.
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