Latest update with Totem of Wrath for WOTLK

The totem grants party/raid members +160 spellpower
and as a secondary effect the totem has an offensive aura, increasing
the chance any enemy within 40 yards will be crit by 3%.

So I assume it's gonna put some kind of debuff on the mob that is in range, more like when you get in range of a paladin's Crusader aura, and obviously you can't have more than 1 crusader aura and have it stack. So I guess same idea with the totem.
Gonna give an aura for mobs to pick up on. Nice fix for the stacking problem. Kinda sucks about the range though gotta keep dropping it for runners :S

Rank 5 at level 67 says + 76 damage and healing on the mmo.chamion website for what that is worth. I don't see any higher ranks available beyond rank five atm.

Could you have 1 warth and one flametounge totem out to give you a total of 233 spell damage (160+73). But will you be able to have flametounge weapon and the flametounge totem buff at the same time?