Whenever one or more Vampires you control attack, create a Blood token. (It's an artifact with "{1}, {T}, Discard a card, Sacrifice this artifact: Draw a card.")
{B}, {T}, Pay 1 life: Create a 1/1 white and black Vampire creature token with lifelink.
{B}{B}, {T}, Sacrifice Glass-Cast Heart and thirteen Blood tokens: Each opponent loses 13 life and you gain 13 life.
![Glass-Cast Heart [Innistrad: Crimson Vow Commander]](http://paradoxtcg.com/cdn/shop/products/18c9d48a-877f-51f2-a614-79470122c331.jpg?v=1702318535&width=1445)
