This is my Vampire Build. Im gonna make a list for what the spells are ment for and what equip you can switch out with what.
the last slot is for support sorceries like fall control repair and such things.
Replenishment = enhanced healing abilities
black flame = dark fire magic
Ricard's Rapier is switched out with the life hunt scythe for big enemies or poise monsters in pvp
switch the talisman with a oolacile ivory catalyst for fall control etc.
rings are the strength in this build, use what you want. but prefered are slumbering dragoncrest ring + ring of fog for the predator aspect of a vampire. hornet + wolf ring for duels. bloodbite ring + cloranthy ring (second ring is up to you on this combo]. and i also like darkwood grain grain + hornet against those annoying flipping spear bros or to make a quick escape. you should arrange the rings in little combos next to each over so you can switch fast mid battle.you can switch the flame with a second dark hand to "suck blood" with the R2. Have Fun!