Notes from author
Massive 474 DMB buff for the BSS. But you could use any weapon you have the stats to hold, as even at base values adding 474 magic damage will make anything dangerous. Falchion, Great Scythe, and Uchi are all options available and all are popular buff targets.
Decide on GMB or Replenishment, as a general rule if you see the Crown or either moonlight weapon, or an obvious catalyst, even opposing DMB users lose damage to GMB. For everything else replenishment isn't exciting but and extra 600ish health actually means you have more health than a lot of builds at 100.
of course WoG is generally useful for keeping people away, dead angles, and with 50 faith it's a major source of damage. So much so that it may be worthwhile to wear the Crown.
I intentionally avoided using RoFaP or Havel's to be certain I could use ring set ups like Wolf/dwgr which is a good standard to keep on. of course sometimes one of them will come off in favor of firstborns (usually paired with crown for maximum WoG damage) and sometimes I'd even consider steel protection or havel's to get my defenses higher.
All in all it's a versatile build that really packs a punch while DMB is active, and of course carry a few elemental weapons around to swap to once DMB wears out.