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

Prerequisites

• You have a way to put a +1/+1 counter on a creature you control.

Steps

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

Effects

• Infinite +1/+1 counters on certain creatures
• Infinite creature ETB
• Infinite creature tokens
• Infinite surveil