Mana Shield

Expending his or her magical reserves, the caster can greatly decrease any damage he or she would otherwise suffer.

As long as the spell is sustained, a percentage of all incoming damage determined by spellpower (30 - 75 %) is converted into MP drain. Control Magics skill can influence the amount of magic power expended at blocking damage, with base 1:1 ratio increasing up to 1 MP per 5 damage taken. The sustain can be stopped at will.