Mortuary + Viscera Seer + Sephiroth, Fabled SOLDIER // Sephiroth, One-Winged Angel + Gwenom, Remorseless

Mortuary

Viscera Seer

Sephiroth, Fabled SOLDIER // Sephiroth, One-Winged Angel

Gwenom, Remorseless

How it works

1. Activate Viscera Seer by sacrificing it.
2. When Viscera Seer dies, Mortuary and Sephiroth, Fabled SOLDIER // Sephiroth, One-Winged Angel trigger.
3. Resolve the Mortuary trigger, putting Viscera Seer from your graveyard onto the top of your library.
4. Resolve the Sephiroth, Fabled SOLDIER // Sephiroth, One-Winged Angel trigger, causing you to gain 1 life and target opponent to lose 1 life.
5. Resolve the Viscera Seer ability.
6. Cast Viscera Seer from the top of your library by paying 1 life.
7. Repeat.

This loop sets up an infinite recycling engine by using Mortuary to catch creatures as they die and place them right back on top of your library. From there, Gwenom, Remorseless grants you the ability to cast that creature straight off the top of your library, paying life instead of its mana cost thanks to its built-in alternative payment effect. Viscera Seer acts as the necessary sacrifice outlet to send the creature to the graveyard in the first place, while its scry ability even helps you peek at your draws. Finally, Sephiroth, Fabled SOLDIER // Sephiroth, One-Winged Angel watches the carnage unfold, draining your opponent's life total and gaining you life with every single death trigger to easily offset the life you're spending to recast your sacrifices.