Underworld Breach + Grinding Station + Mana Crypt

Underworld Breach

Grinding Station

Mana Crypt

How it works

1. Activate Mana Crypt by tapping it, adding CC.
2. Activate Grinding Station by tapping it and sacrificing Mana Crypt, causing yourself to mill three cards.
3. Cast Mana Crypt from your graveyard for its escape cost by exiling three cards from your graveyard.
4. Grinding Station triggers, untapping itself.
5. Repeat.