Uses either a single or twin Lightning Lost Sinner's Swords to absolutely devastating effect. Total damage in this build is bonkers. Retains reasonably tough defenses and enough maneuverability to avoid most things.
Lightning [[Lost Sinner's Sword]]+5 x1 or x2;
Lightning [[Dragon Chime]]+5;
Lightning [[Bow of Want]]+5;
[[Defender's Shield]]+5 *;
Fire [[Vessel Shield]]+10 *;
[[Sanctum Knight Leggings]]+5;
[[Third Dragon Ring]];
[[Lightning Clutch Ring]];
[[Ring of Blades]]+1 or +2;
[[Chloranthy Ring]]+1 or +2;
[[Sunlight Blade]] x2 (REQUIRED);
[[Great Magic Barrier]]x2 (changeable);
Most miracles can serve a useful purpose. Change out the [[Great Magic Barrier]] as necessary, but [[Sunlight Blade]] is REQUIRED.
While much of this build is obviously post NG+, but you can get the ball rolling much earlier than expected by picking up an early [[Lost Sinner's Sword]] and imbuing it with Lightning A.S.A.P.
Almost all the gear can be exchanged as you see fit, with some exceptions: [[Lost Sinner's Sword]], [[Dragon Chime]], [[Saint's Hood]], [[Third Dragon Ring]], and [[Sunlight Blade]] are the NECESSARY things. The [[Royal Soldier's Ring]] can be used in lieu of the [[Third Dragon Ring]] until you get it.
Join the [[Heirs of the Sun]] covenant A.S.A.P. in order to farm one of the necessary [[Sunlight Blade]] spells.
In order to truly utilize this build to it's fullest, you *MUST* absolve whatever sins you have, and DO NOT gain any more. The [[Lost Sinner's Sword]] has additional AR scaling based on how little you've sinned, and is at maximum potency on a completely sinless character.
This ALSO means that you CANNOT be an invader with this build. As such, I recommend the [[Heirs of the Sun]], the [[Dragon Remnants]], or the [[Blue Sentinels]] (best choice) as your covenant. Think of this build as a super hero - with great power comes great responsibility, and you'll want to spend your time helping people rather than grief-ing them.
*: Only equip the shields when using a single [[Lost Sinner's Sword]]. While in this build you will have the [[Vessel Shield]] on your back while you 2h the sword ~90% of the time. Either the [[Defender's Shield]] or the [[Old Knight's Shield]] work as a blocking tool if necessary. Remember that blocking an attack is your plan B; plan A is to avoid it altogether. For maximum carnage, pick up that second [[Lost Sinner's Sword]] as soon as you can.