How can you create a combo with Underworld Breach, Stitcher's Supplier, Phyrexian Altar?
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[START OF COMBO]This combo can be formed with Underworld Breach, Stitcher's Supplier, Phyrexian Altar

Color identity: BR
Mana cost: 
Steps:
  1. Activate Phyrexian Altar by sacrificing Stitcher's Supplier, adding {B}.
  2. Stitcher's Supplier dies, causing you to mill three cards.
  3. Cast Stitcher's Supplier for its escape cost by paying {B} and exling three other cards from your graveyard.
  4. Stitcher's Supplier enters the battlefield, causing you to mill three cards.
  5. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite self-mill
  - Near-infinite death triggers
  - Near-infinite enters the battlefield
  - Near-infinite leaves the battlefield
  - Near-infinite sacrifice triggers
  - Near-infinite storm count[END OF COMBO RESULT][END OF COMBO]

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