Mana-forged Barrier

Envelops you in a Mana Barrier shielding you from damage using mana absorbing up to 90% damage, but decreases with lower mana. @ext:Magic damage absorption is half as effective.:ext@ Significantly increases threat from Magic damage. Teaches you Channeled Mana. You are immune to interrupt effects but reduces overall damage done by 30% and healing done by 40% While casting a damaging or channeled spell, melee attacks against you have a chance to grant Power Surge, restoring 30% of your missing mana over 4 seconds. @ext:Can only occur once every 2 seconds.:ext@ @ext:Increases damage taken against players by 100%:ext@ @ext::ext@

Absorbs damage, draining mana instead. Protected against effects that would interrupt your spellcast. Threat increased, damage reduced.