Snarling Gorehound + Insidious Roots + Skeleton Crew + Moss-Pit Skeleton

Snarling Gorehound

Insidious Roots

Skeleton Crew

Moss-Pit Skeleton

How it works

1. Put a +1/+1 counter on a creature you control.
2. Moss-Pit Skeleton triggers, putting itself on top of your library.
3. Skeleton Crew and Insidious Roots trigger.
4. Resolve the Skeleton Crew trigger, creating a 2/2 Skeleton Pirate creature token.
5. When the Skeleton Pirate enters the battlefield, Snarling Gorehound triggers, causing you to surveil 1, putting Moss-Pit Skeleton into your graveyard from the top of your library.
6. Resolve the Insidious Roots trigger, creating a 0/1 Plant creature token, then putting a +1/+1 counter on each Plant you control.
7. Moss-Pit Skeleton and Snarling Gorehound trigger.
8. Resolve the Snarling Gorehound trigger, causing you to surveil 1.
9. Resolve the Moss-Pit Skeleton trigger, putting it on top of your library.
10. Repeat from step 3.

This clever loop creates an engine of endless value by turning the placement of a single +1/+1 counter into a self-sustaining cycle of graveyard and battlefield interactions. It all starts when a counter is placed on a creature, prompting Moss-Pit Skeleton to pull itself out of the graveyard and onto the top of your library. That movement triggers both Insidious Roots and Skeleton Crew, which wastes no time churning out a 2/2 black Skeleton Pirate creature token with the help of its static lord effect. When that token enters the battlefield, Snarling Gorehound uses its surveil ability to seamlessly send Moss-Pit Skeleton right back into the graveyard, while the Plant token from Insidious Roots simultaneously feeds +1/+1 counters back onto your growing board. Because those counters naturally re-trigger Moss-Pit Skeleton, the entire process loops indefinitely to generate endless creature tokens, entering-the-battlefield triggers, and arbitrarily large stats.