Laman Stahros said:FYI, what you are talking about here is not "all according to the rules". You cannot become flatfooted in the middle of combat. Flatfooted only exists at the beginning of combat (as per the DMG).
Sorry, my terminology error due to our DM asking us for our flatfooted AC in the middle of combat.
If you cannot see your opponent and he fires a missile weapon at you, you are denied your Dexterity bonus to AC. This is basically the same as being flatfooted (with the exception that you can still make Attacks of Opportunity in the middle of combat when denied your Dexterity bonus to AC as opposed to really being flatfooted at the beginning of combat and you cannot even make AoOs).
Additionally, not only do you lose your Dexterity bonus, the archer is at +2 to hit you. So, your effective AC is 2 worse than it would be against an opponent whom you can see, but whom you are flatfooted against in the beginning of the combat.
The point I was trying to make is that your effective AC can be worse than normal flatfooted if archers you cannot see (or you do not see right away) attack you in the middle of combat.
Laman Stahros said:Yes, surprise rounds suck, but, they don't happen in the middle of combat.
I didn't say that surprise rounds happen in the middle of combat. I incorrectly said that we became flatfooted in the middle of combat if we could not see our attacker.
What I meant by that is that we lose our Dexterity bonus to AC and our attacker is at +2 to hit as well. For all intents and purposes, it's the same as being ambushed in the middle of combat.