The 2020-21 Upper Deck Black Diamond Diamond Mine Relics Nathan MacKinnon #DMR-NM trading card is a highly sought-after collectible for ice hockey fans and collectors. This card features a piece of memorabilia from the Colorado Avalanche player's time in the National Hockey League (NHL) season. Produced by Upper Deck, this insert card is part of the Diamond Mine Relics set, making it a valuable addition to any sports trading card collection. With a near mint condition, this card is a must-have for fans of Nathan MacKinnon and the Colorado Avalanche.