The urn enhancer is an item that can be manufactured using the Invention skill. It requires level 24 Invention to discover. The blueprint used to discover how to make an urn enhancer is a reward from Nomad's Elegy. While the enhancer is in the inventory, each urn teleported grants 25% extra experience at a cost of 20 charges. Each divine charge provides enough charge to enhance 150 urns, which gives an average cost of per urn when charges are bought from the Grand Exchange.