You're lost, but no spellcaster is ever truly without options. As a Shadowmoor elf, you're in touch with magics of nature and growth and magics of protection and order. You could try casting a green spell to cause the trees to move aside, so that you could see which way you should go. Or you could try casting a white spell to bolster your defenses before starting off.
Cast the green tree-bending spell.
Cast the white defensive spell.