Promise to use it for evil
From Create Your Own Story
"NOOOoooo..." He gasps as his last breath leaves his body.
You smile a wicked smile.
Suddenly, his eyes flash white. "YOUU SSHHALL PAY FOR YOUUR SINS."
A bolt of light appears from your hand.
You collapse to the floor in a heap, dead.
Dead!
DEAD!
Forever...
...and...
ever.