That, Basically a long staff, I'm pretty sure it counts as 1H still. I haven't played it much so I'm not certain on that.
The orb is similar to mercedes arrow or phantoms cards can be potted for weapon potential stats. (i.e %boss, %att, etc)
However unlike phantom/mercedes it can be seen to the side of the player and it glows red when darkness takes over.
Luminous uses a Shining Rod (double sided staff), this is the only way he uses skills. His secondary weapon is an Orb. He can only use skills if his orb and shining rod are equipped simultaneously. Luminous isn't even that OP, whoever is a true Luminous, will stay with the class till the end. Even if we get nerfed