Treacherous Vampire

Flying
Whenever this creature attacks or blocks, sacrifice it unless you exile a card from your graveyard.
Threshold — As long as there are seven or more cards in your graveyard, this creature gets +2/+2 and has "When this creature dies, you lose 6 life."

Vuela.
Siempre que el Vampiro traicionero ataque o bloquee, sacrifícalo a menos que remuevas del juego una carta de tu cementerio.
Umbral El Vampiro traicionero obtiene +2/+2 y tiene: "Cuando el Vampiro traicionero vaya a un cementerio desde el juego, pierdes 6 vidas".