Urban Daggertooth, Scurry Oak, and Warstorm Surge

Prerequisites

• Urban Daggertooth on the battlefield
• Scurry Oak on the battlefield
• Warstorm Surge on the battlefield
• You have a way to put a +1/+1 counter on Scurry Oak
• Urban Daggertooth has at least one +1/+1 counter

Steps

1. Put a +1/+1 counter on Scurry Oak
2. Scurry Oak triggers, creating a 1/1 Squirrel creature token
3. The Squirrel enters the battlefield, triggering Warstorm Surge, dealing 1 damage to Urban Daggertooth
4. Urban Daggertooth triggers, putting a +1/+1 counter on itself and Scurry Oak
5. Repeat from step 2

Results

• Infinite +1/+1 counters on Scurry Oak and Urban Daggertooth
• Infinite creature tokens
• Infinite ETB
• Infinite proliferate