Humans may dwell here

Alex, how does the life-draining effect manifest visually on the victim's body? And does this spell allow one to maintain youth at the cost of others' lives?

Visually, the victim will appear slightly older, looking sickly and pale. After all, a portion of their hit points is permanently reduced. The sorcerer, on the other hand, will look younger and healthier, but this doesn't imply a significant extension of their lifespan or a substantial slowing of the aging process. Imagine three people of the same age: the first has spent their life drinking, smoking, eating unhealthy food, and lying on the couch, while the second has led an active lifestyle, eaten healthy food, and avoided bad habits. So, the victim will resemble the first, the sorcerer will resemble the second, but in reality, the second won't live much longer and won't stay young forever.

Added 9 minutes later
Heroist, are you going to change the stats, or what? I would have already started creating the characters, but maybe you want to change something.