When people have too much power they usually bite more than they could chew.
The result is a wondrously big ego and head with the idea that they have a proper authority - and a world where
Everything Is Under control
Sadly this delusion is something that as to be realised, since arrogant can only be cured with time and words: Not medicine.
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Greetings mortals, my name is Wah, Arch Lich Wah.