Scurry Oak, Cleric Class, Leonin Elder, and Mycosynth Lattice

Prerequisites

• Scurry Oak on the battlefield
• Cleric Class on the battlefield
• Leonin Elder on the battlefield
• Mycosynth Lattice on the battlefield
• You have a way to cause a permanent to enter the battlefield under your control
• Cleric Class is at least level two

Steps

1. Cause a permanent to enter the battlefield under your control, which enters as an artifact due to Mycosynth Lattice
2. Leonin Elder triggers, causing you to gain 2 life due to Cleric Class
3. Cleric Class triggers, putting a +1/+1 counter on Scurry Oak
4. Scurry Oak triggers, creating a 1/1 Squirrel creature token that enters the battlefield as an artifact due to Mycosynth Lattice
5. Repeat from step 2

Results

• Infinite +1/+1 counters on Scurry Oak
• Infinite creature tokens
• Infinite ETB
• Infinite lifegain
• Infinite lifegain triggers