Notes from author
This is a pretty high-level sorcerer build that should work well for PvP and PVE. You get some poise so you don't get staggered so easily while casting, which is pretty important in my experience. You could also replace Havel's and the BK Gauntlets with Ring of FaP, and Ornstein's Gauntlets or something like that. The extra HP could really come in handy. Crown of Dusk + Bellowing for extra sorcery damage, as well as Logan's Catalyst which you could switch out for the Crystal one, I guess. Grass Crest Shield for Stamina if you're using regular weapons. Moonlight Greatsword, because it's a great pure magic weapon, and it's just awesome overall. You should have plenty of Repair Powder because the R2 attacks drain durability. And then there's the Iaito, which you can buff with Crystal Magic Weapon for a total of, about 732 damage per swing. So you could possibly kill players in 2-3 hits. I just personally prefer the Iaito over Uchigatana, because of the moveset, and it deserves more attention. Hope you enjoy it guys :)
