How can you create a combo with Grenzo, Dungeon Warden, The Cauldron of Eternity, Phyrexian Altar, Dark Ritual, Pinnacle Monk // Mystic Peak?
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[START OF COMBO]This combo can be formed with Grenzo, Dungeon Warden, The Cauldron of Eternity, Phyrexian Altar, Dark Ritual, Pinnacle Monk // Mystic Peak

Color identity: BR
Mana cost: {B}
Steps:
  1. Cast Dark Ritual by paying {B}, adding {B}{B}{B}.
  2. Activate Phyrexian Altar by sacrificing Pinnacle Monk, adding one mana of any color.
  3. When Pinnacle Monk dies, The Cauldron of Eternity triggers, putting Pinnacle Monk from your graveyard onto the bottom of your library.
  4. Activate Grenzo by paying {2}, putting Pinnacle Monk from the bottom of your library into your graveyard, and then putting it onto the battlefield.
  5. When Pinnacle Monk enters the battlefield, it triggers, returning Dark Ritual from your graveyard to your hand.
  6. Repeat.
  7. Once you have infinite mana, you may activate Grenzo's ability any number of times.[END OF COMBO STEPS]

Result:
  - Infinite leaves the battlefield
  - Infinite enters the battlefield
  - Infinite colored mana
  - Infinite sacrifice triggers
  - Infinite death triggers
  - Infinite storm count
  - Infinite magecraft triggers
  - Put all creature cards with power less than or equal to Grenzo's from your library onto the battlefield[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Grenzo, Dungeon Warden must be on the battlefield
  - The Cauldron of Eternity must be on the battlefield
  - Phyrexian Altar must be on the battlefield
  - Dark Ritual must be in your hand
  - Pinnacle Monk // Mystic Peak must be on the battlefield
  - Grenzo has power 2 or greater.
[END OF COMBO PREREQUISITES]
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