Sheoldred, the Apocalypse + K'rrik, Son of Yawgmoth + Greed + Boon Reflection

Sheoldred, the Apocalypse

K'rrik, Son of Yawgmoth

Greed

Boon Reflection

How it works

1. Activate Greed by paying B/P and 2 life, causing you to draw a card.
2. Sheoldred's first ability triggers, causing you to gain 4 life.
3. Repeat.

This engine turns your own life total into an endless well of cards by leveraging K'rrik, Son of Yawgmoth to replace the mana cost of Greed with a simple payment of life. Once that black activation is set in motion, drawing a card triggers Sheoldred, the Apocalypse to net you 2 life. Boon Reflection supercharges that life gain into 4 life per card drawn, completely outstripping the life you spent and letting you keep the loop going as long as you want.