Exalted blade

When cast, summons an exalted blade in the casters hand, the blade deals (Character lvl) d6+ (str) slash damage, when swung it creates a slash that travels (spell level x 10) ft

the blade, when cast, will constantly require the caster to funnel their energy into their hands, if the caster cannot continue channeling the blade with disspell, if the caster chooses they can channel more energy into the blade to cause it to detonate into a radial blind causing enemys in a (spell level x 5) ft radius to become blind for one turn.