Szarel, Genesis Shepherd + Cauldron of Souls + Clock of Omens + Shilgengar, Sire of Famine

Szarel, Genesis Shepherd

Cauldron of Souls

Clock of Omens

Shilgengar, Sire of Famine

How it works

1. Activate Cauldron of Souls by tapping it, giving two nontoken artifact creatures persist until end of turn.
2. Activate Clock of Omens by tapping the nontoken artifact creatures, untapping Cauldron of Souls.
3. Activate Shilgengar by sacrificing one of the nontoken artifact creatures that doesn't have a -1/-1 counter on it.
4. When the creature dies, its persist ability and Szarel triggers.
5. Resolve the persist trigger, returning the creature from your graveyard to the battlefield.
6. Resolve the Szarel trigger, putting a number of +1/+1 counters on the other artifact creature.
7. Resolve the Shilgengar ability.
8. Repeat from step 3 once, instead sacrificing the creature who had counters placed on it in step 6.
9. Repeat from step 1.

This intricate engine uses **Cauldron of Souls** to grant persist to your artifact creatures, allowing them to cheat death and trigger endless sacrifices to **Shilgengar, Sire of Famine**. As those creatures hit the graveyard, **Szarel, Genesis Shepherd** catches the triggers, distributing massive +1/+1 counters to offset the -1/-1 counters from persist and keep the loop resilient. Meanwhile, **Clock of Omens** keeps the machinery flowing by tapping your artifacts to untap the Cauldron, turning the whole assembly into a perpetual motion machine that floods the board with Blood tokens and death triggers.