Originally posted by Etruzki:

First you need to make a black forge
-10 black marble
-10 yggdrasil wood
-5 black core

And then in the black forge you can make krom(two handed sword)
-30 iron
-20 bronze
-5 scale hide

^Above, Etruzki says how.^
Edit: I am pretty sure Yagluth drops a new crafting station item (Haven't played mistlands yet, but I killed Yag recently and he dropped a new unnamed item).