Void Extrapolator // Omit Variables

Void Extrapolator

Mana: {1}{B}

Creature — Aetherborn Warlock

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.

2/2

Omit Variables

Mana: {U/B}

Sorcery

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