Tetzumoc, Progenitor Vampire

Flying, First strike.
If a creature an opponent controls dealt damage
by this creature would die this turn, you may cast
that creature by paying its mana cost and an additional {p/b}, you may spend mana as though it
were mana of any color to cast that spell. That creature is a vampire in addition to its other types.
When this creature attacks it deals 2 damage to
any target. You gain 2 life.