The way this Build works is that you'll typically buff your left-hand weapon with Seppuku to increase its Bleed build up and damage and to trigger Lord of Blood's Exultation. Then you'll lead most fights with Poisonous Mist in order to set Poisoned to also boost your Attack Power by 30% thanks to the Mushroom Crown and Kindred of Rot's Exultation.

You'll then swing repeatedly with L1, blending enemies down quickly to trigger both Millicent's Prosthesis and Rotten Winged Sword Insignia to further increase your Attack Power, giving you an Attack Rating of well over 1k with each Curved Sword. This allows you to attack rapidly with very high damage, with the occasional Hemorrhage proc, and while the enemy remains Poisoned.

If enemies are immune to Poisoned and Bleed, you can still trigger Lord of Blood's Exultation repeatedly with Seppuku as necessary and you can use the Raw Meat Dumpling to set Poisoned on yourself to gain Kindred of Rot's Exultation's buff.