Great Teamwork
(Oriental Adventures, page 63, DnD 3.0)
[Ancestor]
You are a descendant of Hida Banuken, the Crab champion who oversaw the construction of the Kaiu Wall during the Battle of the Cresting Wave.
*Clan:* Crab.
Benefit
When you and an ally flank an opponent, you gain a +4 bonus on your attack roll, instead of the normal +2 bonus.