Quote from Drain Life »
After addressing mana ramp, my next priority is improving card draw. I hate running out of gas as the game goes along. This is where we lean heavily on black to bail us out. Anyone who suggest cutting Ambition's Cost is crazy. Instead, I am going to look to add Ancient Craving, Harrowing Journey, Night's Whisper, Read the Bones, and Painful Truths at the least. Digging deeper into your deck is so underrated and makes a huge difference in games.
Ancient Craving is the same casting cost as Ambition's Cost, so why is Ancient Craving better? Read the Bones, Night's Whisper, Sign in Blood are cheaper to cast. Painful Truths definitely works in the C17 Vampire deck, if you have the mana base to support it.