Urban Daggertooth + Scurry Oak + Warstorm Surge

Prerequisites

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

Steps

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

Effects

• Infinite +1/+1 counters on most creatures you control
• Infinite creature ETB
• Infinite creature tokens
• Infinite proliferate