I think using levitate or other ways to get on top of walls is a little different than hiding inside of a wall... I remember people using levitate to get on top of the roof of structures in OT (and anywhere basically) and rain down death upon melee...
But what about hiding inside of walls or hiding inside of a tree? Granted I think in trees you can still be attacked, should it be allowed then if you're attackable or should trees/walls be disallowed altogether?
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