So I'm starting up a second edition D&D game. In that game you get a THACO number and your dice roll from it. So all the math from getting your Thac0 aside Say I make an attribute named THAC0 in the attributes for a character and I want to to subtract the d20 roll from there...how would I go about doing that? So it'd be something like THAC0 - 1d20 = Result (For example my THAC0 is 14 and I roll a d20 and it comes up 16 I'd get a result of -2
