Hullbreaker Horror + Mana Crypt

Hullbreaker Horror

Mana Crypt

How it works

1. Activate Mana Crypt by tapping it, adding CC.
2. Cast the permanent that can be cast using CC 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 0.
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 C or less, this combo nets infinite colorless mana.