Requirement: Must have the Mark of Fear and Mark of Chaos as well as -1000 alignment.
Caution: ALL CPK
Visit a merman leper with a copy of the Grimoirium Magica in your inventory.
For being drawn into this eschatological conspiracy, Metonychoseuthis, with Swiveling Hooks has granted thee a Mark. You have been granted the Mark of Fnord! You gain 38 practices!