This will bring up two input value macros one for the targets AC and another for your weapons Hit Mod and then based on that information you provide will whisper you the percent that your strike will land. It gives the player a little forewarning by which they can decide if they should engage on their turn or perhaps think of another way ^_^ Good luck /w @{selected|character_name} &{template:default} {{name=AC Calculation}} {{Chance to hit [[100*((21-(?{AC|0}-?{M|0}))/20)]] %}}