Quote Originally Posted by Nedkel View Post
It neither a gain not a loss, it has been designed that way if you use it and it breaks you dont lose any dps.

The TBN could be a dps gain if you take into account first 20-25 seconds of the fight, because you could use it 2 times in the row.
Spamming it will probably end up for you as a loss, but thats in a case of spamming it every CD for 60 seconds.
No, you can lose or gain dps depending on what the bloodspiller u gained replaces. This is explained at the top.