Yawgmoth, Thran Physician + Nest of Scarabs + Panicked Bystander // Cackling Culprit

Yawgmoth, Thran Physician

Nest of Scarabs

Panicked Bystander // Cackling Culprit

How it works

1. Activate Yawgmoth by paying 1 life and sacrificing another creature.
2. When the creature dies, Panicked Bystander // Cackling Culprit triggers, causing you to gain 1 life.
3. Resolve the Yawgmoth ability, putting a -1/-1 counter on any other creature and causing you to draw a card.
4. If the creature who had the counter placed has 0 toughness, it dies as a state-based action.
5. Nest of Scarabs triggers, creating a 1/1 Insect creature token.
6. Repeat until your opponents do not control any more creatures, or until you draw your library.
7. If you have cards remaining in your library, you may repeat this combo any time a creature enters the battlefield under an opponent's control.