Calculates how much mana you will need until the end of the fight and displays what mana pot you will need to use.
Since this wa extrapolates data (using current raid dps and your mana/s) to calculate the expected fightlength and the mana you will need, it can be inaccurate during "high/low performance" moments. A smoothing in form of a pt1 function is used and gets rid of a big part of the data fluctuation.
I'm not using the overall raid dps (total dmg/total fight length) and mana/s since it want this aura to react to the current performance.