Sanctum invocation

A ritual spell that Harry used to claim the uncharted island in Lake Michigan. The process involved Harry summoning the island's spirit up by casting a spell augmented with Soulfire. Harry then had to fight the spirit using the four classical elements. According to Harry, "I punched it in the nose. Now we're friends." It was at this time that he named the spirit Demonreach. After physically connecting himself with the island by standing upon it he is able to "know" things occurring on the island that he wouldn't be able to know normally (ie, locations of snakes, bees, people, etc). Harry is expressly warned by the Gatekeeper against drawing on the island's power as he does not have the skill to control it yet.