Grim Poppet + Sakashima the Impostor + Nest of Scarabs

Grim Poppet

Sakashima the Impostor

Nest of Scarabs

How it works

1. Activate Grim Poppet by removing a -1/-1 counter from it, putting a -1/-1 counter on Sakashima the Impostor.
2. Nest of Scarabs triggers, creating a creature token.
3. Activate Sakashima the Impostor 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.