Golgari Thug + Phyrexian Altar + Bolas's Citadel + Vein Ripper

Golgari Thug

Phyrexian Altar

Bolas's Citadel

Vein Ripper

How it works

1. Activate Phyrexian Altar 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. Cast Golgari Thug from the top of your library by paying 2 life.
6. Repeat.

This elegant loop uses Phyrexian Altar as a reliable sacrifice outlet that simultaneously fuels Bolas's Citadel, allowing you to cast spells directly from the top of your library by paying life instead of mana. By feeding Golgari Thug to the altar, its own dredge and graveyard-stacking trigger works in tandem with Bolas's Citadel to keep replaying the creature for a mere two life. Meanwhile, Vein Ripper oversees the carnage, turning every single sacrifice of Golgari Thug into a steady stream of life gain and draining your opponents dry until the game is won.