Plumecreed Mentor, Aven Wind Guide, and Herd Baloth

Prerequisites

• Plumecreed Mentor in hand
• Aven Wind Guide on the battlefield
• Herd Baloth on the battlefield
• available

Steps

1. Cast Plumecreed Mentor by paying
2. When Plumecreed Mentor enters the battlefield, it triggers, putting a +1/+1 counter on Herd Baloth
3. Herd Baloth triggers, creating a 4/4 Beast creature token that has flying and vigilance due to Aven Wind Guide
4. When the Beast enters the battlefield, Plumecreed Mentor triggers, putting a +1/+1 counter on Herd Baloth
5. Repeat from step 3

Results

• Infinite ETB
• Infinite creature tokens
• Infinite +1/+1 counters on Herd Baloth