Hullbreaker Horror + Mana Vault + Mana Crypt

Hullbreaker Horror
Mana Vault
Mana Crypt

Requires
Mana Crypt in hand. All other permanents on the battlefield.
Steps
  1. Activate Mana Vault by tapping it, adding ccc
  2. Cast Mana Crypt by paying 0
  3. Hullbreaker Horror triggers, returning Mana Vault from the battlefield to your hand
  4. Activate Mana Crypt by tapping it, adding cc
  5. Cast Mana Vault by paying 1
  6. Hullbreaker Horror triggers, returning Mana Crypt from the battlefield to your hand
  7. Repeat
Results
Infinite colorless mana. Infinite storm count.