Kheru Goldkeeper + Golbez, Crystal Collector + Cloakwood Swarmkeeper + Moss-Pit Skeleton

Kheru Goldkeeper

Golbez, Crystal Collector

Cloakwood Swarmkeeper

Moss-Pit Skeleton

How it works

1. Put a +1/+1 counter on a creature you control.
2. Moss-Pit Skeleton triggers, putting it from your graveyard onto the top of your library.
3. Kheru Goldkeeper triggers, creating a Treasure token
4. When the Treasure enters the battlefield, Golbez and Cloakwood Swarmkeeper trigger.
5. Resolve the Golbez trigger, putting Moss-Pit Skeleton from the top of your library into your graveyard.
6. Resolve the Cloakwood Swarmkeeper trigger, putting a +1/+1 counter on it.
7. Repeat from step 2.

This clever loop relies on a self-sustaining cycle of counters and tokens that effortlessly builds your board state. Placing a counter on a creature triggers Moss-Pit Skeleton from your graveyard straight to the top of your library, which simultaneously prompts Kheru Goldkeeper to spawn a Treasure token for the graveyard departure. That new Treasure entry then kicks off Golbez, Crystal Collector to surveil and return the Moss-Pit Skeleton back down into the graveyard, while also satisfying Cloakwood Swarmkeeper's token-triggered ability to grow with a fresh +1/+1 counter. Because that counter placement immediately rearms the Moss-Pit Skeleton, the whole engine restarts on its own to flood your battlefield with endless treasures and scaling power.