Glass-Cast Pan

Whenever one or more Vampires you control
attack, create a Pancake 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 Pan and thirteen
Pancake tokens: Each opponent loses 13 life and
you gain 13 life.