Duergar rogue (OC)

Also known as gray dwarves, the duergar are from the Underdark and are the evil cousins of the surface dwarves.

Special abilities
A deurgar rogue fires bolts that poison on-hit for either d2 strength damage (except for the level 1) or d2 constitution damage both at DC 14.

Duergar rogues are immune to paralysis. They can cast invisibility as a spell-like ability with a caster level of 3 for the level 1, 10 for the level 5, and 15 for the level 10 and above.