A heroic warrior who is not what he seems to be.
A blessing can also be a curse - and the last thing the world needs is an Orcish confidence trickster with an enhanced intellect and a penchant for storybooks.
A great warrior, cursed with an eternal life and a dark companion.
Real World: some Indians in the Amazon treat their eyes with a traditional potion applied with palm leaves. Brutally painful, the drug alters vision, giving the jungle's dense green walls greater texture and dimension. You could adapt this to desert or swamps, or other hard to navigate regions.