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Message: <blockquote data-quote="Galfridus" data-source="post: 1629971" data-attributes="member: 119">I can't find a rule which states this, only the rule that a spell's point of origin must be a grid intersection. So it would be possible to run a wall diagonally from the grid intersection where the existing blade barrier meets the eastern wall, running NNE - SSW through the doorway. However, it does seem like the possibility to step outside exists. So let's modify the question:[code]BBBBBBBB#.22##122####.#.....[/code]Now 1 casts a blade barrier running north-south along the gridline that cuts through character 2. Would you allow him to step out of the door in this instance? If so, then what if the blade barrier ran from the grid intersection NW of character 2 through the grid intersection S of the east end of the doorway?To insert some storyline into this question, I'm asking because this combat is currently underway (stopped the session partway through). Character 1 is a smart and well-trained NPC who would know the results of placing their spell. I guess I'm really looking for opinions on how far should you be allowed to move to avoid a Blade Barrier -- 5 feet, however long it takes, or somewhere in between?The question gets uglier with larger creatures -- does a 20x20 creature get 10' free movement if the barrier pops down right in their middle?</blockquote>