Justkan Artificer seems messed up.
 

I was building myself a Magus with the Jistkan Artificer archetype from Blood of the Ancients and I noticed two things wrong with Herolabs and that archetype

I noticed at level 3 when you get the empowered arm ability and it doesn't take away your magus arcana at 3rd level like it's supposed too.

Also if you use your arcane pool to increase your golemarm enhancement bonus, the shield bonus from Shielding Arm power doesn't go up automatically. Less important.

Submit a bug report. http://forums.wolflair.com/showthread.php?t=24976