Originally Posted by
Zoeri
The Bels Mirth gem adds the +1400 spell penetration for 12 seconds every minute. This can be during the first 12 seconds, or the last, highly unpredictable. You'd also need CoA, Shadow Hex, Sadistic Soul or Pact of Malacodor to proc and crit and rather as well have the +125% critical damage rating to gain a noticable amount of damage from it. And that is a lot of "if's".
Blue Iron Hammer is nice enough in a dps situation, but if you can, go and get the Blossoming Death, unless you got a lot of Gold to spare and get Ibis (pukes). The T3 sword is also very nice but not easy to get.