destroy it, and if you do, Special Summon 1 "F.A." monster from your Deck
Short-term flipping, especially of trending cards, can be profitable
Like most Magic: The Gathering cards, the value of Dreamdrinker Vampire depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Modern Horizons 3)
Those competitive successes keep the few Quarter Century Secret Rares on the market on an upward trajectory, though it may not last forever, as lower-rarity versions dropped significantly in the past week, after it was revealed that the card would be reprinted in the upcoming April set Quarter Century Stampede
In the early game it can function as an additional Sai, Master Thopterist, but it becomes a dangerous topdeck in the late game