Quote:
|
My thought is that his base attack remains the same, but he adds the new str mod to attack/defense.
|
Correct, you gain the Natural Armor, Strength, Dexterity, and Constitution of the new creature, but virtually no other static numerical value.
As for additional attacks, just remember that even if YOU have a base attack of +6 or better, any natural attack from the creature you polymorph into does not gain extra attacks.