Underworld Breach + Grinding Station + Mana Crypt
All permanents on the battlefield.
- Activate Mana Crypt by tapping it, adding
- Activate Grinding Station by tapping it and sacrificing Mana Crypt, causing yourself to mill three cards
- Cast Mana Crypt from your graveyard for its escape cost by exiling three cards from your graveyard
- Grinding Station triggers, untapping itself
Infinite self-mill. Near-infinite colorless mana. Near-infinite storm count.