Increases spell damage when the caster has >50% mana.
Damage bonus: 10% per level

Gives a chance that the currently casted spell does not consume mana.
Chance: 1,5% per Level.

Reduces the mana regen ticks by 0.0125 seconds per level.

Deals damage to the target.
Damage: As much mana as the caster currently has (the mana will not be consumed).