Mana Cleanse

Spell Type: Defense; Mana Cost: 7 MP; TN: 17
Test: None; Requirements: Mana Drain

You use your own mana to block that of other casters. For the duration of the encounter, if someone spends mana points in a 80 foot radius of you, you can spend your own mana points to negate their spell on a 1-for-1 basis. For example, if another mage spends 4 MP to cast a spell within 80 feet of you, you can spend 4 MP to negate that spell. If you do not have enough mana points to counter the entire cost, your spell has no effect. This spell does not reveal which spell the other mage is trying to cast; only how many MP are being spent to fuel it