When Gluttonous Guest enters the battlefield, create a Blood token. (It’s an artifact with “, , Discard a card, Sacrifice this artifact: Draw a card.”)
Whenever you sacrifice a Blood token, you gain 1 life.
Oracle
Creature — Vampire
When Gluttonous Guest enters the battlefield, create a Blood token. (It’s an artifact with “, , Discard a card, Sacrifice this artifact: Draw a card.”)
Whenever you sacrifice a Blood token, you gain 1 life.