^iof you focus on weapon alone then you cant make a decent spiral lk build. when we say build its a compilation and combination of stats, gears, and card set. i dont know lk much especially the spear type but it goes something like this...
gears: basic gears
upper head: ship capt hat with kiel
mid head: any L.aura with kiel
lower head: lk cape with kiel
armor: gr+tao "may do"
shield: usakoring "for example"
weapon: +10 L.lk spear with inca+2TG+skel worker or 2TG+2skel worker if spiral already bypass enemy def.
garment: skoll+noxious "my favorite choice"
boots: 2 FBH
accesosry: 2 L.str gounts
stats
str = 280 or 290 + bonus "divisible by 10"
agi = until 195 aspd after setting dex
vit = the rest in here
int = leave at 1
dex = set until you have 450 hit or 500 "magnum break adds hit rate"
luk = you dont need luk coz your good.
PS: use box of storms or cursed water or any other converter to bypass GR and raydrics..
try... then observe.