Aenigma Vial

Whenever you cast a red spell, you may put a
pressure counter on Aenigma Vial.
{r}, {t}: Put a pressure counter on Aenigma Vial.
{t}: Sacrifice Aenigma Vial. If you do, you may
cast a red spell with converted mana cost equal to
the number of pressure counters on Aenigma Vial
from your hand without paying its mana cost.
One drop of her blood can set worlds ablaze.