Innistrad: Crimson Vow

By Invitation Only | Sorcery | | Choose a number between 0 and 13. Each player sacrifices that many creatures. | Micah Epstein

Edgar's Awakening | Sorcery | | Return target creature card from your graveyard to the battlefield. When you discard Edgar's Awakening, you may pay {B}. When you do, return target creature card from your graveyard to your hand. | Joshua Raphael

Lacerate Flesh | Sorcery | | Lacerate Flesh deals 4 damage to target creature. Create a number of Blood tokens equal to the amount of excess damage dealt to that creature this way. (They're artifacts with "{1}, {T}, Discard a card, Sacrifice this artifact: Draw a card.") | Pauline Voss