I managed to get what I wanted out of the deck a few times so far. The life-gain is completely devastating and gets pretty bad for the opponent very quickly unless they are able to keep you down to zero creatures. But even with a Guildmage that is in there for a few turns, you can potentially swing for 4 with merely a Child of Night.
In the late game when you have around three creatures (with maybe a Blood Baron or Archangel in play) Sanguine Bond can be a game winner. Sanguine Bond and Blood Baron creates a hard to beat 8 damage and 4 life-gain.
This deck really works, and I'm trying to find out what will make it shine. For now, the Debt of the Deathless card sound like a neat experimental card. Ending the game on a sudden drain life might be a good win condition. I noticed that sometimes it is hard to take that last 5 damage with this deck, and Debt of the Deathless can end the game with around 7 mana.
Sanguine Bond and Viskopa Guildmage are must haves for this deck. Blood Baron and the Archangel also seem necessary. Path of Bravery seems like a great support card for the cost so far. Read the Bones doesn't break the life-gain bank so far as I can tell because you'll be gaining more than enough life if the deck is doing well, and the speed upgrade is very welcome in this deck.
I found that I needed artifact and/or enchantment removal as well as a way to gain life without having to attack, so I added Solemn Offering. That's another experimental card that might do well here.
