The dryad is a powerful spirit of the woods, intimately linked to trees and nature. It makes its home in oak trees and lives in secluded woodlands, preferring the company of plants, animals and trees to any other living things, including their own.
To rest and recuperate, a dryad blends into an oak to which it is permanently connected, sharing both nutrients and life. The link between a dryad and its tree is akin to a destinea tree, but much stronger. If the oak dies, the dryad also dies (and vice versa).
A dryad will do everything in its power to protect and preserve the woods where she lives. To that end, it will sometimes join forces with rangers, druids or elves.