Spell Absorption is a spell of the Mysticism school of magic and will absorb an attacking spell as an increase in magicka (proportional to the original spell's power). The magnitude is the chance that a spell will be absorbed and the duration is how long the spell will last. The caster's magicka pool cannot be raised above its maximum value by Spell Absorption. It is important to note that Blessings from shrines can also be absorbed as magicka.