Void Extrapolator

This creature enters prepared. (While it's prepared, you may cast a copy of its spell. Doing so unprepares it.)
Threshold — This creature gets +1/+1 as long as there are seven or more cards in your graveyard.

Esta criatura entra preparada. (Mientras esta criatura esté preparada, puedes lanzar una copia de su hechizo. Si lo haces, deja de estarlo.)
Umbral - Esta criatura obtiene +1/+1 mientras haya siete o más cartas en tu cementerio.

Omit Variables

Mill three cards. (Put the top three cards of your library into your graveyard.)