This is an Orzhov mid-range life gain/life drain deck that i've been piloting with great success. Kaladesh has added a few good cards (Kambal, Angel of Invention, Essence Extraction) that I think make this deck viable. I wouldn't say its quite Tier 1, but it's definitely competitive, synergistic, and extremely fun
Hope you enjoy.
Creatures (27):
3x Lone Rider
4x Child of Night
2x Ayli, Eternal Pilgrim
3x Pious Evangel // Wayward Disciple
2x Kambal, Consul of Allocation
3x Drana's Emissary
1x Gisela, the Broken Blade
1x Kalitas, Traitor of Ghet
3x Bloodbond Vampire
3x Cliffhaven Vampire
1x Angel of Invention
1x Noxious Gearhulk
Instants (5):
3x Essence Extraction
2x Anguished Unmaking
Sorceries (2):
2x Declaration in Stone
Enchantments (2):
2x Campaign of Vengeance
Planeswalkers (1):
1x Sorin, Grim Nemesis
Land (24):
8x Plains
8x Swamp
2x Shambling Vent
2x Isolated Chapel
4x Evolving Wilds
Considerations:
Retreat to Hagra: I haven't tested with this card yet, but it seems like it would work well. I might take out Campaign of Vengeance and replace it with Hagra for testing. Its one mana cheaper, gives your land drops some utility, and has synergy with Lone Rider, Bloodbond, & Cliffhaven Vampire.
Farbog Revenant: Comes with skulk and lifelink which is handy, buts its a 3 drop for a 1/3
It could work in theory but to make room for it you would have to remove either Pious Evangel or Bloodbond Vampire, and their almost too good in the deck to remove. Someone care to test this card for me?
Kalastria Healer: Best life gainer and life drainer in the meta. Issue: only activates with ally's. There's a fair amount of ally creatures in the deck already (11) but it just doesn't seem like enough to warrant him in the deck. However, I am considering testing him in the place of Pious Evangel, but then the deck would be at 62 cards. Angel of Invention and Noxious Gearhulk on the chopping block?? Possibly Ayli?
Solemn Offering: With the amount of enchantments and artifacts now being played in the meta, this card seems like a must have. Gives 4 life, transforms Lone Rider, and activates both Bloodbond and Cliffhaven Vampires. Issue: its too often a dead card in a hand and deck that wants to move fast. Some testing may be needed. For now, I just can't imagine a space for it.