How to you handle area of effect in theater of the mind? In my last session my players were attacked by hordes of Skaven, and in an effort not to allow the dramatic tension to dissipate in a single turn, I had my players roll 1dX for how many would be effected rather than measuring distance without a grid. The players accepted my adjudication, but I would prefer to nail down a consistent rule since this is likely going to happen a lot.