Carmilla's Castle

{t}: Add {c}.
{t}, Pay 1 life: Add one mana of any color.
Spend this mana only to cast a Vampire spell.
{5}, {t}: Create a Blood token. This ability
costs {1} less to activate for each Vampire you control. (It's an artifact with "{1}, {t},
Discard a card, Sacrifice this token:
Draw a card.")