Envision an immense, gnarled tree with swirling branches adorned with shimmering, luminescent leaves. Its thick trunk is covered in ancient runes that glow softly in the twilight. Beneath its vast canopy, a cascade of colorful, mythological creatures gather, sharing whispers of wisdom. The air is filled with sparkling motes of light, creating a mystical ambiance that beckons viewers to discover the secrets held within this extraordinary arboreal sage.