I have a couple questions on how you want to run the Giantbane feat before we it comes up in comabt and possibly slow things down.
My questions are in Dark Orange
Duck Underneath: To use this maneuver, you must have
taken a total defense action, then have been attacked by a foe at least two size
categories larger than you. You gain a +4 dodge bonus to your Armor Class, which
stacks with the bonus for total defense.
(would this apply to everyone attacking me? Just the 1st attacker that qualifies to trigger it? If 4 giants surrounded me and attacked at once what would happen?)
If that foe misses you, on your next turn, as a free action, you may make a DC 15 Tumble check. If the check succeeds, you move immediately to any unoccupied square on the opposite side of the foe (having successfully ducked underneath your foe).
(does this provoke Attacks of Opportunities? since it is the same Tumble DC as avoiding AoO I would be inclined to think not but I want to check. As a free action it would not cost movement yes?)
If there is no unoccupied square on the opposite side of the foe or you fail the Tumble check, you remain in the square you are in and have failed to duck underneath your foe.