look at the top card of your library mtg Pojo's Magic Gathering the Day Impulse · Battlebond (BBD) #119

With the balancing act in play with the 4/4 body, it all makes sense

If this creature's controller can prevent it from being blocked and can put at least one merfolk into play each turn, it can effectively be used to chain countless turns together, winning the game for its controller

But, of course, has the best downside insurance

If the copied permanent is copying something else, then the token enters as whatever that permanent copied, with the listed exceptions

While zombies and vampires are also iconic in black and more common overall, demons are usually rare and mythic rare creatures, like dragons among red creatures and angels among white creatures