Doc Aurlock, Grizzled Genius, Aang, Airbending Master, and Appa, Steadfast Guardian

Prerequisites

• Doc Aurlock, Grizzled Genius on the battlefield
• Aang, Airbending Master in hand
• Appa, Steadfast Guardian on the battlefield
• available

Steps

1. Cast Aang by paying its mana cost
2. When Aang enters, it triggers, airbending Appa
3. Cast Appa from exile by paying due to Doc Aurlock
4. When Appa enters, it triggers, airbending Aang
5. Cast Aang from exile by paying due to Doc Aurlock
6. Appa's second ability triggers, creating a 1/1 Ally creature token
7. Repeat from step 2

Results

• Infinite LTB
• Infinite ETB
• Infinite storm count
• Infinite creature tokens
• Infinite experience counters
• Infinite creature tokens at the beginning of your next upkeep