If you constantly spam the wand charge attack, you lose stamina.
But, you can still shoot one ice ball with no stamina.
So if you spam single ice ball charges, this happens:
I call it "negative stamina" because if you have any negative stamina you can't do any stamina taking actions other than the wand charge attack. It slowly degrades like regular stamina regenerates. You can have an infinite amount of negative stamina, too.
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