>>720319818
It does look like a necron weapon
It has 4 type of weapons and you imbue them with an emotion
the one on those screenshots is a fear (which is green in game) polearm
on this one >>720319838 you can only see the weapon top left but its a rage (red) greatsword and the skills on the bottom left being red too as they are rage skills
and an ecstasy polearm in this shot