Sangrophage

At the beginning of your upkeep, tap this creature unless you pay 2 life.

Sign in Blood

Target player draws two cards and loses 2 life.

When this creature enters, each player sacrifices a creature of their choice.

At the beginning of your upkeep, you draw a card and you lose 1 life.

This creature gets -X/-X, where X is your life total.

Return up to two target creature cards from your graveyard to your hand.

Whenever another creature enters, you lose 1 life.

When this creature enters, sacrifice it unless you discard a creature card.

Flying
If damage would be dealt to you, prevent that damage and mill twice that many cards.

Agonizing Syphon deals 3 damage to any target and you gain 3 life.