Notes from author
Build that does 2154.6 (edit: it's actually 2608.2, see update below) damage with one crystal soul spear so long as you're in red tearstone ring range. You only need to hit them once. I can back it up with the math too:(3.6x315) standard damage, plus 0.50(3.6x315) red tearstone, plus 0.20(3.6x315)dusk crown, plus 0.20(3.6x315)bellowing dragoncrest, equaling 2154.6 total. (I chose chester's set for armor because it looks cool.) No matter who you fight, you WILL one shot them so long as you land the hit.
Update: Added power within, don't know how I forgot. now it's up to 2608.2 damage per hit with 0.40(3.6x315) damage added from power within.