Grim Poppet + Sakashima the Impostor + Hapatra, Vizier of Poisons

Grim Poppet

Sakashima the Impostor

Hapatra, Vizier of Poisons

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. Hapatra 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. Hapatra triggers, creating a creature token.
5. Repeat.

This loop turns a clever clone into an engine for an endless swarm of vipers. By having Sakashima the Impostor enter as a copy of Grim Poppet, you create a self-sustaining loop where the two creatures can endlessly ping each other with -1/-1 counters back and forth. Every single time a counter is placed, Hapatra, Vizier of Poisons watches the action and rewards you with a fresh 1/1 green Snake token with deathtouch.