Rosie Cotton of South Lane, and Herd Baloth

Prerequisites

• Rosie Cotton of South Lane in hand
• Herd Baloth on the battlefield
• available

Steps

1. Cast Rosie Cotton by paying
2. When Rosie Cotton enters the battlefield, its first ability triggers, creating a Food token
3. Rosie Cotton's second ability triggers, putting a +1/+1 counter on Herd Baloth
4. Herd Baloth triggers, creating a 4/4 Beast creature token
5. Repeat from step 3

Results

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