Provide method to restore mana and use it as a refund when casting Flow
and Bound more than once during its duration. The application of this
method in this way is kind of a kludge, but it works and the method is
definitely helpful.
Flow had a downside where the caster was more likely to take collision
damage. I found a variable on the player object called minImpactSpeed,
adding the increase in speed due to Flow to that value did what I wanted it to do
after some testing.
