Unidracorn Guard

You're on a mountain top, a big cliff in front of you. However, you're so high up that the clouds touch the ground and a deep misty fog conceals the end of the walkable road. You walk a few steps towards the cliff and find a magical portal buried in the clouds. You want to peek through the portal but all you see is clouds on the other side. You want to go even closer... Suddenly someone grabs your shirt and picks you up by the scruff. "Where do you think you're going, pipsqueak?"