Mordenkainen's lucubration
Wizard Utility 22
Effect: Until the end of the encounter or until you become unconscious, your arcane powers that can be sustained instead last until the end of the encoutner.
Mordenkainen's lucubration is a 22nd-level Wizard utility power.[AP:111]
Character optimization[]
This power doesn't have a specific character optimization rating, as it's strength varies based on which powers are available to a given character.