Create a detailed portrayal of a mythical creature deeply intertwined with nature, embodying the spirit of an ancient forest. This guardian should have a wise but weary appearance, with skin textured like bark and moss, embodying the colors and textures of the forest. His eyes, soulful and piercing, reflect the depth of centuries of woodland lore. His body should be partially merged with the gnarled roots and mossy overgrowth of an old tree, suggesting he is both part of the forest and its protector. Visualize him in a lush, foggy forest setting to enhance the mystical and timeless aura of this guardian