I have two players in my game who are Shadowblades, so I am working on converting Codex spells to the new CoM system- and am making a spreadsheet utility to help. I have a question regarding the Duration tables on p.38 & 39.
Column 1 is clearly the cost for a fixed duration and Column 2 is the cost for a given duration per rank of skill in the spell. For Column 3, the note says that the cost is for a duration of concentration up to a maximum limit. But is that maximum duration fixed or per rank of skill? The text ("** = caster must concentrate, up to a maximum duration") implies that the maximum is fixed, not per rank of skill. But there are no spells with a duration of that type. There are, however, several spells ("Glowing Eyes", "Cool", "Heat") with durations of "# Rounds/Rank". Which is supposed to be?
Thanks in advance!