Golgari Thug + Viscera Seer + Bolas's Citadel + Vein Ripper

Golgari Thug

Viscera Seer

Bolas's Citadel

Vein Ripper

How it works

1. Activate Viscera Seer by sacrificing Golgari Thug.
2. When Golgari Thug dies, it and Vein Ripper trigger.
3. Resolve the Golgari Thug trigger, putting it from your graveyard onto the top of your library.
4. Resolve the Vein Ripper trigger, causing you to gain 2 life and target opponent to lose 2 life.
5. Resolve the Viscera Seer ability.
6. Cast Golgari Thug from the top of your library by paying 2 life.
7. Repeat.

This loop turns your graveyard and library into an endless engine of sacrifice fueled entirely by your own life total. Viscera Seer provides the free outlet to sacrifice Golgari Thug, whose own death trigger lets it immediately replace the card you are about to draw. Bolas's Citadel bypasses normal mana costs so you can recast Golgari Thug straight off the top of your library by paying life instead of mana. Meanwhile, Vein Ripper watches every iteration happen, converting the endless stream of creature deaths into a lethal drain of your opponent's life total while padding your life total to keep the Citadel casting costs affordable.