Some cards are easier to cast when your graveyard is full, like Tolarian Terror, while others are stronger when you force your opponents to discard, mill, or otherwise fill their own graveyard
Rakdos decks in particular that like to mill opponents could see some use out of this, and the Rogue typing opens up certain shells for it to shine
If you believe your card is valuable, consider sending it to a professional grading service like PSA or Beckett to get an official grade, which can significantly impact the value
Otherwise, the promo stamp can push focus away from the intended subject, as in the case of the new Venusaur promo card
Cultivate Cultivate has fifteen unique printings, but this borderless version includes the first piece of new art for the card in nearly ten years
The Commander Of course this decks commander has to be Go-Shintai of Life's Origin