PS: You can also take away the physiology of those directly converted by you, returning them to regular human beings. Also, in fiction there's many variations of the same creature like Demons or Vampires, so when choosing your conversion power, please specify what incarnation will you select? For example, you pick Vampirization and the vampires you can make, are those like in Jojo's Bizarre Adventure. As a bonus, being that you're the alpha of your new species, that mean lacking some weaknesses such as sunlight for vampires or silver for werewolves, but there will be still ways to kill you so don't get too cocky.
I would probably choose Lycanthropic Infection and transform others into Lycanthropes, more precisely my own take on these creatures...
Also known as ''Lycans'' or ''Werewolves'', these beasts are famous for their strength and resilience, both in human and ''beast'' forms. Contrary to folklore, they can transform without the need of a Full Moon and that only strengthens their wild instincts, entering a berserker-like state until sunrise. In fact, lycanthropes can only transform at night, as sunlight blocks the process until dusk or prolonged stay in dark places. Lycanthropes can convert humans into more of them with their ''cursed saliva'', but only works with men and there's a low percentage of success (1 out of 100), having most dying rather than transforming.
While they aren't immortal like vampires, their lifespan is longer than humans and live for several centuries before dying. Lycanthropes can heal much faster than humans, but other than teeth and tails, they cannot regenerate lost body parts like limbs. All lycanthropes, regardless of how strong they become, are vulnerable to Silver, as the slightest touch corrodes their flesh and leave scars, while being pierced with a silver-made item will poison their bodies and kills them.
So, what supernatural species will you bring upon this world?
