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Can a 'Blade Barrier' turn?
the rulebook says that Blade Barrier can either be cast as a 'vertical curtain' or as a ringed wall. It doesn't explicitly state that the 'curtain' has to be in a straight line but it also doesn't say that the spell can be shaped somehow either.
So, the question is, can a Blade Barrier be cast so that it appears in a non-straight line, either as a curve or with angles?