Herd Baloth, and Cathars' Crusade

Prerequisites

• Herd Baloth in hand
• Cathars' Crusade on the battlefield
• available

Steps

1. Cast Herd Baloth by paying
2. Cathars' Crusade triggers, putting a +1/+1 counter each creature you control
3. Herd Baloth triggers, putting a green Beast token onto the battlefield
4. Repeat from step 2

Results

• Infinite creature tokens
• Infinite ETB
• Infinite +1/+1 counters