I've personally been a fan of the aesthetics of the vampires in Zendikar block. Minus a few cards with a little blood on a few of their mouths here and there, I'd say that there is surprisingly little gore depicted on them. In general though, I feel that if the artwork is your primary concern, your best bet would be to look on sites like gatherer or magiccards.info to sift through the cards that do or don't work for you.
Mono or multi color black it does not matter.
Please no zombies or undead.
I know that I should not judge a card on it's artwork but I do not want to get in trouble with whoever might be snooping around such as my mom
If it has sexy (such as Liliana or those vampires from Innistrad) artwork post anyway
bonus points if it is an example "black is not evil"
Modern: GW Hatebears/midrange, WGU Knightfall/evolution midrange stuff
Standard: nope
Legacy: W Death & Taxes
EDH (not Commander!): W Avacyn, Angel of Hope, GR Ruric Thar, the Unbowed, WGB Anafenza, the Foremost, WU Hanna, Ship's Navigator
You're probably cutting out a number of good cards, though.
Use Gatherer to look for cards of a particular sort.