Sera has to bleed before he gets to use his powers which is the norm in their place.
Ene runs the risk of slowly turning into a plant when he uses his powers. He can also use his blood to amplify what he can do. Feeding the earth his blood makes the drawback of his power worse though.
Lulu' body temperature rises every time she uses her powers, the increase of temperature is proportional to the scale of her projects. It's not advisable for her to use it for long periods of time.









