How can you create a combo with The Balrog, Durin's Bane, Phyrexian Altar, Blight Mound?
user
[START OF COMBO]This combo can be formed with The Balrog, Durin's Bane, Phyrexian Altar, Blight Mound

Color identity: BR
Mana cost: {B}{R}
Steps:
  1. Cast The Balrog from the command zone by paying {B}{R}.
  2. Activate Phyrexian Altar by sacrificing The Balrog, adding {B}.
  3. Choose to return The Balrog to the command zone from your graveyard.
  4. When The Balrog dies, it and Blight Mound trigger.
  5. Resolve the Balrog trigger, destroying any artifact and/or creature an opponent controls.
  6. Resolve the Blight Mound trigger, creating a 1/1 Pest creature token.
  7. Activate Phyrexian Altar by sacrificing the Pest, adding {R}.
  8. When the Pest dies, it triggers, causing you to gain one life.
  9. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite commander casts
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite lifegain
  - Infinite lifegain triggers
  - Infinite leaves the battlefield
  - Infinite sacrifice triggers
  - Infinite storm count[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - The Balrog, Durin's Bane must be in the command zone
  - Phyrexian Altar must be on the battlefield
  - Blight Mound must be on the battlefield
  - There have been a number of permanents sacrificed this turn equal to five plus The Balrog's commander tax.
[END OF COMBO PREREQUISITES]
assistant