Class Feature Interactions with Two Weapon Rend

[Will Black]

How do abilities like Smite Evil and Sneak attack interact with the feat Two Weapon Rend? Does the extra damage/damage dice from these abilities get added to TWR's damage? What about a fighter that is dual wielding weapons that he has Weapon Specialization with? I'm really just looking for where the line gets drawn with this ability.

[Flashohol]

no to all of the above, TWR is its own effect 1d10+str not a weapon attack not really an attack at all.

[wraithstrike]

The extra damage from two weapon rend is just extra damage. It is not its own attack.

edit:No sneak attack, smite damage, or anything else gets activated due to rend damage.

[Will Black]

Thanks for the quick replies!