But with Djezet skin (1.0.3.7)

[Yury1975]

Djezet skin adds not only +2, but also adds additional die to the check

Edited August 13, 2016 by Yury1975

[Nirven]

I can confirm this, the text on the card says "Reveal this card to add 2 to your Charisma or Diplomacy non-combat check.", but I get the 2 plus an additional D6.

[kurtalb1]

I can confirm as well, but this was happening before the current update.  Don't know if the card is printed wrong or there shouldn't be the additional die.