Grim Poppet + Hapatra, Vizier of Poisons + Gigantoplasm

Grim Poppet

Hapatra, Vizier of Poisons

Gigantoplasm

How it works

1. Activate Grim Poppet by removing a -1/-1 counter from it, putting a -1/-1 counter on Gigantoplasm.
2. Hapatra triggers, creating a creature token.
3. Activate Gigantoplasm 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 clever loop leverages the interplay between Grim Poppet and Gigantoplasm by continuously pinging each other with their shared ammunition, stripping and adding -1/-1 counters back and forth indefinitely. Hapatra, Vizier of Poisons acts as the crucial catalyst here, watching every single one of those counter placements happen and rewarding your board state with an endless swarm of 1/1 green Snake creature tokens with deathtouch. Because Grim Poppet's counter removal and Gigantoplasm's flexible copying ability create a closed circuit of targets, you can repeat this ping-pong effect as many times as you desire to flood the battlefield.