It's an incredibly specific activation requirement, requiring it to be drawn in the Draw Phrase while the opponent controls three or more Monsters
Since Vampires are often aggressive, youll need ways to maintain momentum
Morph creatures are a lot more difficult for your opponents to play around when they don't know whether you might suddenly flip over a removal spell
I say "sort of" because, as most of us know, the card game itself is still just a card game in its own manga and anime , leaving the game's actual, internal fantasy setting almost totally unexplored
While there are several factors that determine a cards value (art, history, rarity, nostalgia, limited supply, etc) one of the most important factors to consider is the cards condition