since this thread closes soon, I'll put up my Final Submission
Lucernava lucerna is latin for lamp and the "ava" part comes from lava, making the name a complete reference to the major idea of mos' design: the Lava Lamp. The poison typing may not apear in the name but I doubt that it really needs to, rarely do double-type pokemon have both types referenced in the name.
Pokémon Black FC: 1292 0405 0636
I use legal hacks =P