yes and at the same time a huge resounding no. dragons are real, they are not physical creatures, but astral, so we can gain a lot of spiritual power from them. as such, if you want this particular spell to work, you could call upon Grael [dragon of the north] for energy and protection. you might feel a surge of energy, but don't expect to see anything, or start to change into something. this spell, it sounds like, an energy exercise, and to help you connect with the element of Earth. try to meditate for a bit outside, try to feel the energy around you and the ground bellow you, before trying to call forth the energy.
you should study more, learn about magic and energy work, this spell sounds like an energy exercise to me rather than a transformation or something similar.