I've created a 4th level dual-wielding spiked shield fighter as an opponent for my players. He's human and so has six feats:
Ambidexterity
Two-weapon Fighting
Weapon Focus (Large Spiked Shield)
Weapon Specialization (Large Spiked Shield)
Shield Expert (from Sword & Fist)
Dodge
(If I were building this as a character with advancement in mind, I'd take Power Attack instead of Dodge so that the next feat could be Improved Shield Bash, but that's not appropriate in this case)
Shield Expert, by the way, let's you retain the shield bonus to AC while using it to make an off-hand attack.
So, the guy gets two attacks with a full-attack action with -2 penalties to each (mitigated partly by the +1 to each for weapon focus), and the damage is 1d6+2 each (specialization). This doesn't take into account BAB, abilities, etc.
The nice thing is he gets +2 AC for large shield, and the PHB explicly says that a shield used for an off-hand attack counts as a light weapon, whether it's a large one or a small one. Small shields were tempting because they do the same damage with spikes, and while that drops the AC bonus down to +1, it allows for holding other things in the hands (though not fighting with weapons), like healing potions, for instance.
I actually have a question, though. So for purposes of off-hand penalties, a shield counts as light. For purposes of being struck in combat, a buckler is small, a small shield medium-sized, and a large shield large-sized. How about for disarming purposes? Is a large shield (spiked or not) considered medium or large? It makes sense that it's large for being struck because it's a broad target, but I'm not sure it should count as large for disarming purposes, giving the wielder that advantage. Why? Because If it were really a large weapon, how could a medium-sized creature wield it in one hand? Also, the fact that it counts as light for off-hand penalty purposes suggests to me that it would be a far stretch to call it large for disarming purposes.
What do you people think?
Thanks,