Effectively, the title. All 3 skills amplified by Ulzuin’s have Internal Trauma as a damage type, and yet the “exclusive” skill doesn’t amplify it in anyway. Meanwhile, it amplifies Lightning and electrocute damage, despite the fact that only one skill does that damage type innately.
It just seems odd that if I wanted to go a physical/trauma bomb build, I can’t make use of the modifier as well as I should.