Grim Poppet + Nest of Scarabs + Vizier of Many Faces

Grim Poppet

Nest of Scarabs

Vizier of Many Faces

How it works

1. Activate Grim Poppet by removing a -1/-1 counter from it, putting a -1/-1 counter on Vizier of Many Faces.
2. Nest of Scarabs triggers, creating a creature token.
3. Activate Vizier of Many Faces by removing a -1/-1 counter from it, putting a -1/-1 counter on Grim Poppet.
4. Nest of Scarabs triggers, creating a creature token.
5. Repeat.

This clever loop turns the natural push-and-pull of -1/-1 counters into an unstoppable swarm of bugs. By having Vizier of Many Faces enter the battlefield as a copy of Grim Poppet, you set up a pair of mutually dependent engines that can constantly strip and replace counters from one another. Every time either Grim Poppet or your copied Vizier of Many Faces sheds a counter to target the other, Nest of Scarabs watches the action and immediately rewards you with a fresh Insect token. Because neither creature dies in the process, you can bounce the counters back and forth indefinitely to generate an endless army of tokens and enter-the-battlefield triggers.