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

5-card combo · BRG

Verdict

Yes — this 5-card loop generates infinite colored mana and deploys your entire creature library in a Grenzo shell.

Cards required

Cheapest stack total

$61.56

Color identity

BRG

Popularity

0 decks

Format

Commander

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Dark Ritual seeds the first activation; Phyrexian Altar converts Timeless Witness into mana, The Cauldron of Eternity cycles her back to library bottom, and Grenzo mills her straight onto the battlefield to retrieve Dark Ritual and restart the loop. Every iteration costs 3 mana and produces 4, netting infinite colored mana while triggering death and ETB effects as many times as needed.

How it works

Prerequisites

Grenzo has power 2 or greater.

Steps

Cast Dark Ritual by paying , adding .
Activate Phyrexian Altar by sacrificing Timeless Witness, adding one mana of any color.
When Timeless Witness dies, The Cauldron of Eternity triggers, putting Timeless Witness from your graveyard onto the bottom of your library.
Activate Grenzo by paying , putting Timeless Witness from the bottom of your library into your graveyard, and then putting it onto the battlefield.
When Timeless Witness 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

Eternal Witness is the tighter swap for Timeless Witness — same ETB text, one less mana to cast if the loop ever needs rebuilding from hand. Once mana goes infinite, Grenzo's activated ability puts every creature in the library onto the battlefield, so the combo is its own closer; no additional win condition is required beyond whatever creatures already live in the 99.

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

How it works

Cheaper, tighter, alternate lines

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