Grenzo, Dungeon Warden + The Cauldron of Eternity + Phyrexian Altar + Dark Ritual + Revolutionist

5-card combo · BR

Verdict

Yes — this 5-card loop generates infinite colored mana and storm count in any Rakdos shell that runs Grenzo, Dungeon Warden as the engine.

Cards required

Cheapest stack total

$57.23

Color identity

Popularity

1 decks

Format

Commander

Buy required cards on TCGplayer

The loop hinges on Revolutionist returning Dark Ritual to hand each time it enters the battlefield, while The Cauldron of Eternity cycles it back to the bottom of the library on death so Grenzo can flip it again for 2. Phyrexian Altar converts the sacrifice into a mana float that, combined with Dark Ritual's black burst, covers Grenzo's activation cost and leaves a surplus each cycle — Rakdos reanimator and Grenzo combo shells are the natural homes.

How it works

Prerequisites

Grenzo has power 2 or greater.

Steps

Cast Dark Ritual by paying , adding .
Activate Phyrexian Altar by sacrificing Revolutionist, adding one mana of any color.
When Revolutionist dies, The Cauldron of Eternity triggers, putting Revolutionist from your graveyard onto the bottom of your library.
Activate Grenzo by paying , putting Revolutionist from the bottom of your library into your graveyard, and then putting it onto the battlefield.
When Revolutionist 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 colored mana; Infinite death triggers; Infinite ETB; Infinite LTB; Infinite magecraft triggers; Infinite sacrifice triggers; Infinite storm count; Put a selection of creature cards from your library onto the battlefield

Cheaper, tighter, alternate lines

Any free sacrifice outlet replaces Phyrexian Altar if the mana math still closes — Viscera Seer keeps the loop going while adding scry. Once mana is infinite, Grenzo's ability can flip the entire library onto the battlefield; pair that with a Blood Artist or Zulaport Cutthroat already in play to convert the creature flood into a table kill without needing additional setup.

Grenzo, Dungeon Warden + The Cauldron of Eternity + Phyrexian Altar + Dark Ritual + Revolutionist

How it works

Cheaper, tighter, alternate lines

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