Grenzo, Dungeon Warden + The Cauldron of Eternity + Phyrexian Altar + Dark Ritual + Pinnacle Monk // Mystic Peak

5-card combo · BR

Verdict

Yes — this 5-card loop generates infinite colored mana and empties your library of creatures in a Grenzo, Dungeon Warden shell.

Cards required

Cheapest stack total

$67.34

Color identity

Popularity

28 decks

Format

Commander

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Dark Ritual recasts itself through Pinnacle Monk // Mystic Peak's enter-the-battlefield trigger, which returns it from the graveyard each loop; Phyrexian Altar converts Pinnacle Monk into the mana needed to keep Grenzo, Dungeon Warden activating, while The Cauldron of Eternity shuttles the Monk from graveyard to library bottom on death. The result is infinite storm count, infinite magecraft triggers, and eventually every creature in the deck on the battlefield. Grenzo decks that already run Phyrexian Altar and The Cauldron of Eternity are the natural home — the two-power floor on Grenzo is trivially met with a single counter or a cheap Equipment.

How it works

Prerequisites

Grenzo has power 2 or greater.

Steps

Cast Dark Ritual by paying , adding .
Activate Phyrexian Altar by sacrificing Pinnacle Monk, adding one mana of any color.
When Pinnacle Monk dies, The Cauldron of Eternity triggers, putting Pinnacle Monk from your graveyard onto the bottom of your library.
Activate Grenzo by paying , putting Pinnacle Monk from the bottom of your library into your graveyard, and then putting it onto the battlefield.
When Pinnacle Monk enters the battlefield, it triggers, returning Dark Ritual from your graveyard to your hand.
Repeat.
Once you have infinite mana, you may activate Grenzo's ability any number of times.

Result

Infinite LTB; Infinite ETB; Infinite colored mana; Infinite sacrifice triggers; Infinite death triggers; Infinite storm count; Infinite magecraft triggers; Put a selection of creature cards from your library onto the battlefield

Cheaper, tighter, alternate lines

Ashnod's Altar substitutes for Phyrexian Altar if colorless mana is sufficient for the Grenzo activation cost, though losing the colored output tightens the mana math. Once the loop fires, Walking Ballista or Dockside Extortionist pulled off the library bottom through Grenzo closes the game — the engine itself only guarantees a full board, not a kill.

Grenzo, Dungeon Warden + The Cauldron of Eternity + Phyrexian Altar + Dark Ritual + Pinnacle Monk // Mystic Peak

How it works

Cheaper, tighter, alternate lines

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