Steelfin Whale, Retraction Helix, and Mana Vault

Prerequisites

• Steelfin Whale on the battlefield
• Retraction Helix in hand
• Mana Vault on the battlefield
• Steelfin Whale does not have summoning sickness
• available

Steps

1. Cast Retraction Helix by paying , targeting Steelfin Whale
2. Activate Mana Vault by tapping it, adding
3. Activate Steelfin Whale by tapping it, returning Mana Vault from the battlefield to your hand
4. Cast Mana Vault by paying
5. When Mana Vault enters the battlefield, Steelfin Whale triggers, untapping Steelfin Whale
6. Repeat from step 2

Results

• Infinite colorless mana
• Infinite storm count