Zelc said:There are two considerations here: rules and balance.
Ruleswise, there isn't much to support this interpretation. If you don't interpret the cap on the Kensai Signature Weapon ability to take the base weapon enhancement bonus into account, then there is no cap on the weapon's enhancement bonus. There's no line in the rules that says "if this increase would make the Signature Weapon's total enhancement bonus go above +10, then the ability costs 5000xp extra". Not to mention you can have the equivalent of a +14 weapon before epic (+10 weapon with only a +1 enhancement bonus to attack/damage, with Greater Magic Weapon). The difference here is it allows you to have a +24 weapon.
Where does it say you can have the equivalent of a +14 weapon? In the DMG it says a +10 cap with special abilities included. So how would you get it to be a +24 weapon when the max. Enhancement bonus cap is +5 unless it is an epic weapon. As for citing rules. I didn't cite any. Except for the demarcation between regular and epic. Now I am just confused as to how the +24 came into being? And where is it listed that +14 is allowable for a non-epic weapon. I may not have the book that is coming from.
Thanks