The Wise Mothman, Moss-Pit Skeleton, Scurry Oak, and Path of Discovery

Prerequisites

• The Wise Mothman on the battlefield
• Moss-Pit Skeleton in the graveyard
• Scurry Oak on the battlefield
• Path of Discovery on the battlefield

Steps

1. Put a +1/+1 counter on Scurry Oak
2. Moss-Pit Skeleton and Scurry Oak trigger
3. Resolve the Moss-Pit Skeleton trigger, putting it from your graveyard onto the top of your library
4. Resolve the Scurry Oak trigger, creating a creature token
5. When the creature token enters the battlefield, Path of Discovery triggers, causing you to put Moss-Pit Skeleton into your graveyard from the top of your library
6. The Wise Mothman's second ability triggers, putting a +1/+1 counter on Scurry Oak
7. Repeat from step 2

Results

• Infinite ETB
• Infinite creature tokens
• Infinite +1/+1 counters on a creature