The Short, Eventful Tenure of Headmaster G Squid

Dumbledore has died, and Harry is grieving. Before the funeral, though, a mysterious ritual is completed to choose the next Headmaster. The ritual picks the Giant Squid. But as always with Harry, that's just the beginning. Some deaths, a little swearing, and some possible futures. AU Crackfic for the TL Crack!Fic exchange, specifically Rose of the West and HeadlessHuntsman.