Mabel, Valley Hero, and Herd Baloth

Prerequisites

• Mabel, Valley Hero on the battlefield
• Herd Baloth in hand
• available

Steps

1. Cast Herd Baloth by paying its mana cost
2. When Herd Baloth enter, Mabel triggers, putting a +1/+1 counter on Herd Baloth
3. Herd Baloth triggers, creating a creature token
4. When the creature token enters, Mabel triggers, putting a +1/+1 counter on Herd Baloth Repeat from step 3

Results

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