Cast Dockside Extortionist either from your hand by paying 1 or from your graveyard for its escape cost by paying 1 and exiling three other cards from your graveyard.
Dockside Extortionist enters the battlefield, creating at least two Treasure tokens.
The Treasures enter the battlefield, triggering Grinding Station that many times, untapping Grinding Station.
Activate Grinding Station by sacrificing a Treasure, causing you to mill three cards.
Activate Thermopod's second ability by sacrificing Dockside Extortionist, adding .
Activate a Treasure by tapping and sacrificing it, adding 1.
Repeat.
If opponents control three or more artifacts/enchantments, this combo will net near-infinite Treasure tokens and colored mana.