We have blade turns but no magic mitigation tool like it? I propose that the standard blade turn be given the additional property of prevention of a magical attack. The other option I see would be to create a second spell, at the same intervals as the pbt, with the pulsing magical turn. The later option would require the caster to choose between the two. I think this would be useful and empower more of those classes as well a increased priority in pvp parties.