@ firenatsu you cannot physically teleprot yourself to another dimention using a portal. a portal can be used to trap negative energy/spirits as well as help your astral self to project. [your astral self is similar to your spirit, it's not but think of it as your spirit, it leaves your body and can travel to other planes]
dragons are astral beings [similar to spirits, demons, or other beings of energy] they are not physically real, but people do work with them, calling upon their energy to aid and guide them in their practices. you cannot become a dragon, or lord over a dragon, or create one, these are astral beings, we are physical beings.