Tidespout Tyrant, Shriekhorn, and Mana Crypt

Prerequisites

• Tidespout Tyrant on the battlefield
• Shriekhorn in hand
• Mana Crypt on the battlefield

Steps

1. Activate Mana Crypt by tapping it, adding
2. Cast Shriekhorn by paying
3. Tidespout Tyrant triggers, returning Mana Crypt from the battlefield to your hand
4. Activate Shriekhorn by tapping and removing a charge counter from it, causing target player to mill two cards
5. Cast Mana Crypt by paying
6. Tidespout Tyrant triggers, returning Shriekhorn from the battlefield to your hand
7. Repeat

Results

• Infinite colorless mana
• Infinite mill
• Infinite self-mill
• Infinite storm count