Notes from author
Another glass-cannon one-shot build; this time with 8 Vit instead of 11 and Crystal Magic Weapon instead of Darkmoon Blade. Hurt yourself until you're shiny, BUFF *ALL* THE THINGS, give 'em your best T-rex impression, and then obliterate everything in one hit.
If you are cursed, Power Within will deal only one point of damage per second, which will be negated by Sanctus' regen.
I had an attunement slot to spare, so I chose Aural Decoy solely for the purpose of taunting things that have been reduced to red paint. You can, of course, replace it with whatever you like as laughing at how dead things are isn't an absolutely necessity.
Edit: Increased Str and End so that this build can use the Dragon King Greataxe and fastroll with it.