Mortuary + Shilgengar, Sire of Famine + Bontu's Monument + Gwenom, Remorseless

Mortuary

Shilgengar, Sire of Famine

Bontu's Monument

Gwenom, Remorseless

How it works

1. Activate Shilgengar by sacrificing a creature with mana value 1 or less.
2. When the creature dies, Mortuary triggers, putting the creature from your graveyard onto the top of your library.
3. Resolve the Shilgengar ability.
4. Cast the creature from the top of your library by paying 1 life.
5. Bontu's Monument triggers, causing you to gain 1 life and each opponent to lose 1 life.
6. Repeat.

This loop turns the life-paying magic of Gwenom, Remorseless into a self-sustaining engine by exploiting Mortuary to instantly recycle any small creature you feed to Shilgengar, Sire of Famine. While Shilgengar is busy converting your sacrifices into Blood tokens, Bontu's Monument steps in to completely offset Gwenom's life-payment cost whenever you recast the creature, draining your opponents dry in the process. Because you are constantly casting, sacrificing, and recurring the same creature for next to nothing, you easily churn through your library while burying the table under an endless avalanche of death and life-drain triggers.