Basically, your off-hand attacks are "extra" attacks, just like cleave attacks are "extra". Whirlwind only uses up all your normal iterative attacks, not any extra attacks you get from other sources.
That's the first I've heard of that, but it helps resolve what I long thought was a big imbalance with WWA. Essentially WWA is much more powerful with a two-handed weapon. This ruling helps balance the two-weapon fighter who needs all the help he can get.
I disagree with that. Whirlwind is a Full Attack Action. I think that 'regular attacks' in this case applies to all of your attacks for the round, rather than 'regular' = On-hand attacks.
Your interpretation is wrong, but serves just fine as a house rule. Sorry, I couldn't resist. Off-hand attacks are extra attacks that you get when you take a full-attack action.
Sorry, I couldn't resist. Off-hand attacks are extra attacks that you get when you take a full-attack action.
