Hullbreaker Horror, and Mana Crypt

Prerequisites

• Hullbreaker Horror on the battlefield
• Mana Crypt on the battlefield

Steps

1. Activate Mana Crypt by tapping it, adding
2. Cast the permanent that can be cast using from your hand by paying its mana cost
3. Hullbreaker Horror triggers, returning Mana Crypt from the battlefield to your hand
4. Cast Mana Crypt by paying
5. Hullbreaker Horror triggers, returning the permanent cast in step 2 from the battlefield to your hand
6. Repeat
7. If the permanent can be cast using or less, this combo nets infinite colorless mana

Results

• Infinite colorless mana
• Infinite storm count