Quote Originally Posted by RhazeCain View Post
The question was about long boss fights. To date, I have not seen sleep used during a boss fight. Ever.

As a tank, I'm not sure if that's because things are immune to sleep or just that they have to die and there's no point in waiting. There may be times when sleep is valuable, but that would be strategy specific to certain boss - not general answer.
Rivenroad. But i see your point, sleep is definitely not the answer to his mp scarcity.