Of course, beguiler only steps on the toes of the Rogue and Bard if there is one of the others in the party.Go down to 4+ int skill points, get bard progression spells, capping at 6, and maybe lose trapfinding or some other class features that step on the Rogue and Bard's toes?
Skillful (Complete Arcane, 144): you are automatically considered proficient with the weapon and treat your base attack bonus as being 3/4 of your level (unless it's already higher). Cost equivalent: +2Skillful weapon property already gives you 3/4 bab at +1, IIRC.
Bards don't have trapfinding so it isn't stepping on their feet.Go down to 4+ int skill points, get bard progression spells, capping at 6, and maybe lose trapfinding or some other class features that step on the Rogue and Bard's toes? Beguiler's already pretty overpowered, if you're going to make them melee viable, too, they need to lose a few things.
True that! I had forgotten about that.Skillful weapon property already gives you 3/4 bab at +1, IIRC.
Which class would you say can put this to best use, and what is the worst unbalancing effect they can achieve with it?Don't recall that one, but printed or not, I'd never allow something like that into my games. IMO, that kind of item would completely break any semblance of class balance.
I like the idea of a warrior-mage who's neither about turning his skin into stone or giving himself the strength of a giant, nor about blasting his opponents with fire and lightning through his sword, but about confusing his enemies with illusions before cutting them up. Even though medium BAB alone isn't going to do it, the beguiler seems like a good place to start.Why would you want to increase bab anyways? The class is not built for combat in the first place. You have the goods with large area-affecting debuffs, why bother wading into melee?