Eutropia the Twice-Favored, Herd Baloth, and Enchanted Evening

Prerequisites

• Eutropia the Twice-Favored on the battlefield
• Herd Baloth on the battlefield
• Enchanted Evening on the battlefield
• You have a way to cause a permanent to enter the battlefield under your control

Steps

1. Cause a permanent to enter the battlefield under your control
2. Eutropia triggers, putting a +1/+1 counter on Herd Baloth
3. Herd Baloth triggers, creating a 4/4 Beast creature token that is also an enchantment due to Enchanted Evening
4. Repeat from step 2

Results

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