Free Magic, or simply magic, is seen as a swirling mist of blue smoke. Sometimes the clouds mix together, forming long tendrils of the energy.
In higher concentrations, Mana is usually yellow or gold. This is likely related to the color of Ichor.
Free Magic is something most people will never see. The primordial energy can sometimes be seen radiating from the dead bodies of very magically powerful beings, as magic does occur in the bodies of every living thing, although very, very small amounts. More powerful and magically adept beings have more magic, which escapes after death.
Free Magic can also be seen flowing out of the Great Barrier.