Life totals are going to dwindle quickly
Boseiju, Who Endures Boseiju, Who Endures gets the nod because its a channel ability on a land
I also cut Anowon because we run a couple non-Vampires we want to keep in play
Archangel of Thune puts a +1/+1 counter on each creature you control whenever you gain life, which means infinite life and infinite counters on creatures you have on the battlefield
It also works beautifully with Yawgmoth's Will or Peer into the Abyss, which gives you the burst you need for a big turn without needing ramp
The White, Blue, and Black (or Esper) deck for Final Fantasy is built around Y'shtola, Night's Blessed, who incentivises you to cast multiple noncreature spells with mana value 3 or greater in a single turn to drain your opponents and draw cards along the way