Transmutive Mantle

School Abjuration, Transmutation
Tier Sorcerer/Wizard 6, Bard ?, Magus ?, Witch ?
CASTING
Casting Time 1 Standard action
Components V,S
EFFECT
Range ?
Target Personal
Duration 1 round/level
Saving Throw None; Spell Resistance No
DESCRIPTION
Transmutive Mantle functions as a buffer against enemy spells, sapping and storing a little of their strength as they pass through it to be transformed into a spell of the caster's choice. The DC of all hostile spells that affect the caster is reduced by 2 (level 1 and 0 spells by 1 and 0 respectively), and that DC reduction is stored by the Mantle until a total of 6 is reached. Upon reaching 6, the spell's protection immediately ends and the caster must expend up to 6 of the stored charges at once on his or her next turn or take 1d6 force damage for each unexpended charge from the spell's backlash. Each charge expended reduces the total cost of spells cast that turn by 1 (this does not grant the ability to cast more than one spell in a turn; the caster must be able to do so otherwise).