How can you create a combo with Underworld Breach, Grinding Station, Mox Amber?
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[START OF COMBO]This combo can be formed with Underworld Breach, Grinding Station, Mox Amber

Color identity: R
Mana cost: 
Steps:
  1. Activate Mox Amber by tapping it, adding one mana of any color among legendary creatures and/or planeswalkers you control.
  2. Activate Grinding Station by tapping it and sacrificing Mox Amber, causing yourself to mill three cards.
  3. Cast Mox Amber from your graveyard for its escape cost by exiling three cards from your graveyard.
  4. When Mox Amber enters the battlefield, Grinding Station triggers, untapping Grinding Station.
  5. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite self-mill
  - Near-infinite storm count
  - Near-infinite mana among colors of legendary creatures and planeswalkers you control[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
[END OF COMBO PREREQUISITES]
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