You create a portal within 5 ft of yourself. The portal's destination must be a place you have seen in the last hour, or you have a fixed memory of that location. You and creatures of your size or smaller may walk through the portal and arrive at your destination. If an enemy attempts to walk through the portal, the portal immediately closes and that creature takes 2d10 necrotic damage + your spellcasting ability modifier. If no creature walks through the portal, it automatically closes within 1 minute.