Black is potentially a good place for Devotion in Vintage, too. I mean consider the juicy targets:
1cc
Gravecrawler - The 1 devotion that never dies.
2cc
Withered Wretch - Good body, good utility, 2 devotion.
Bloodghast - Doesn't stay dead, awesome with Clamp.
Natuko Specter - Seems amazing with lots of B.
3cc
Nightveil Specter - Saw some marginal play as a variant of Ophidan, but sadly dies to Delver and bolt...
4cc
Phyrexian Obliterator - Holy crackers what does RUG even do against this dude?
And that's not even looking into cards like Bob, Hyppie, Sin Collector, or others with not-entirely-black casting costs. Trouble is, what do you do with all of that mana? The only card I can think of here that plays nicely with Temple and without temple, while helping devotion, is Natuko Specter. I don't think there's much else there.
This the list I've been messing around with so far:
Mono B DevotionArtifacts:
1 Black Lotus
4 Chalice of the Void
2 Crucible of Worlds
1 Mox Jet
1 lotus petal
1 sol ring
Creatures/Walkers:
2 Braids
3 Dark Confidant
2 Deathrite Shaman
4 Gravecrawler
3 Phylactry Lich (I've always wanted this guy to work out somewhere he's a favorite of mine)
2 Pyrexian Obliterator
4 Liliana of the Veil
Enchantments:
3 Gate to Phyrexia (You feed them with Gravecralwers or bitterblossom tokens and Bloodghasts depending on preference)
Insant/Sorceries:
2 Imp's Michief (with a lot of Abrupt Decay around these can get very useful. I've stolen Ancestrals with them too.The life loss is usually miniscule)
1 Vampiric Tutor
1 Demonic Tutor
4 Duress
2 Mind Twists
Lands:
2 Lake of the Dead (Another card I've wanted to see work for a long time and Two Lakes might be too many)
2 Nykthos, Shrine to Nix
1 Strip Mine
5 Swamp
2 Urborg, Tomb of Yawgmoth
1 Vault of Whispers or Darksteel Citadel (for Phylactery Lich)
1 Volrath's Stronghold
3 Wasteland
I haven't tested it much but I think theres an alright deck in there somewhere.
Another that might do good in a Mono B Devotion list is Vampire Nighthawk