These are the warriors of magic. They guard protect, keep order. At least that's how it was in the beginning - their magic is mostly rooted (and strongest in) spells and abilities that would serve them the purpose protecting and ruling
They are builders, their magic is mostly based in earth uses and earth manipulation and harnesses the elements - all but Fire.
Drak are the seers. Their magic is weak, and mostly focused on being defensive. They can see into the future and use the pure magic of the earth (black water) to do so. Black after is also their only food source.
Vily are mind manipulators. They are tricky and fairy like, they can convince humans to cause peace or wars. For centuries it was only peace, but often they get feisty and do things they are not supposed to. They also posses the power to "activate" the latent magic of a mortal.