Lonis, Cryptozoologist, Steelfin Whale, Shrieking Drake, and Multani's Harmony

Prerequisites

• Lonis, Cryptozoologist on the battlefield
• Steelfin Whale on the battlefield
• Shrieking Drake in hand
• Multani's Harmony on the battlefield
• Multani's Harmony attached to Steelfin Whale
• Steelfin Whale does not have summoning sickness

Steps

1. Activate Steelfin Whale by tapping it, adding
2. Cast Shrieking Drake by paying
3. Shrieking Drake enters the battlefield, triggering itself and Lonis
4. Resolve the Shrieking Drake trigger, returning it from the battlefield to your hand
5. Resolve the Lonis trigger, creating a Clue token
6. The Clue enters the battlefield, triggering Steelfin Whale, untapping Steelfin Whale
7. Repeat

Results

• Infinite Clue tokens
• Infinite ETB
• Infinite LTB
• Infinite storm count