Calica Exhaustion
From Egs Mayhem
This is a very deep sleep that occurs when Calica mages use too much power at once. Depending on how much the mage has overdrawn, a mage can be asleep for hours. In severe cases, the mage can be asleep for days and cannot be awakened even by his arm being severed.
This has also been known to happen at the end of SuperCalica or HyperCalica.