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

Grenzo, Dungeon Warden
The Cauldron of Eternity
Phyrexian Altar
Dark Ritual
Ardent Elementalist

Requires
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 hand. Ardent Elementalist must be on the battlefield. Grenzo has power 2 or greater. Mana needed:
Steps
  1. Cast Dark Ritual by paying , adding .
  2. Activate Phyrexian Altar by sacrificing Ardent Elementalist, adding one mana of any color.
  3. When Ardent Elementalist dies, The Cauldron of Eternity triggers, putting Ardent Elementalist from your graveyard onto the bottom of your library.
  4. Activate Grenzo by paying 2, putting Ardent Elementalist from the bottom of your library into your graveyard, and then putting it onto the battlefield.
  5. When Ardent Elementalist 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.
Results
Infinite colored mana. Infinite death triggers. Infinite ETB. Infinite LTB. Infinite magecraft triggers. Infinite sacrifice triggers. Infinite storm count. Put all creature cards with power less than or equal to Grenzo's from your library onto the battlefield.

Grenzo, Dungeon Warden
0.06% of 3267 decks 2 decks
Creatures
Stone Retrieval Unit
100% of 1 decks +100% synergy
Wreck Hunter
100% of 1 decks +100% synergy
Thran Spider
100% of 1 decks +100% synergy
Scampering Surveyor
100% of 1 decks +100% synergy
Junkyard Genius
100% of 1 decks +99% synergy
Workhorse
100% of 2 decks +99% synergy
Threefold Thunderhulk
100% of 1 decks +99% synergy
Priest of Urabrask
100% of 2 decks +98% synergy
Priest of Gix
100% of 2 decks +98% synergy
Barbed Servitor
100% of 1 decks +98% synergy
Goblin Engineer
100% of 2 decks +94% synergy
Reassembling Skeleton
100% of 2 decks +93% synergy
Solemn Simulacrum
100% of 2 decks +77% synergy
Beast of Burden
50% of 2 decks +50% synergy
Goblin Machinist
50% of 2 decks +50% synergy
Akki Rockspeaker
50% of 2 decks +50% synergy
Outrage Shaman
50% of 2 decks +50% synergy
Triskelavus
50% of 2 decks +50% synergy
Arcbound Lancer
50% of 2 decks +50% synergy
Arcbound Overseer
50% of 2 decks +50% synergy
Anarchist
50% of 2 decks +50% synergy
Arcbound Slasher
50% of 2 decks +50% synergy
Pentavus
50% of 2 decks +50% synergy
Catalyst Elemental
50% of 2 decks +50% synergy
Bone Shredder
50% of 2 decks +50% synergy
Cathodion
50% of 2 decks +50% synergy
Flesh-Eater Imp
50% of 2 decks +50% synergy
Balthor the Defiled
50% of 2 decks +49% synergy
Skinrender
50% of 2 decks +49% synergy
Plundering Barbarian
50% of 2 decks +49% synergy
Junktroller
50% of 2 decks +49% synergy
Epitaph Golem
50% of 2 decks +49% synergy
Tuktuk Rubblefort
50% of 2 decks +49% synergy
Pontiff of Blight
50% of 2 decks +49% synergy
Rapacious Dragon
50% of 2 decks +49% synergy
Baeloth Barrityl, Entertainer
50% of 2 decks +49% synergy
Palladium Myr
50% of 2 decks +49% synergy
Fury
50% of 2 decks +49% synergy
Persistent Specimen
50% of 2 decks +48% synergy
Garna, the Bloodflame
50% of 2 decks +48% synergy
Patron of the Arts
50% of 2 decks +48% synergy
Zealous Conscripts
50% of 2 decks +48% synergy
Leaden Myr
50% of 2 decks +48% synergy
Blood Pet
50% of 2 decks +48% synergy
Iron Myr
50% of 2 decks +48% synergy
Midnight Reaper
50% of 2 decks +47% synergy
Ingot Chewer
50% of 2 decks +47% synergy
Ravenous Chupacabra
50% of 2 decks +47% synergy
Goblin Matron
50% of 2 decks +47% synergy
Reckless Barbarian
50% of 2 decks +47% synergy
Instants
Fire Prophecy
50% of 2 decks +49% synergy
Sacrifice
50% of 2 decks +48% synergy
Burnt Offering
50% of 2 decks +45% synergy
Culling the Weak
50% of 2 decks +44% synergy
Cabal Ritual
50% of 2 decks +42% synergy
Entomb
50% of 2 decks +41% synergy
Seething Song
50% of 2 decks +40% synergy
Vampiric Tutor
50% of 2 decks +33% synergy
Chaos Warp
50% of 2 decks -0% synergy
Sorceries
Chaotic Transformation
100% of 1 decks +100% synergy
Terisiare's Devastation
100% of 1 decks +99% synergy
Brotherhood's End
100% of 1 decks +99% synergy
Stomping Slabs
50% of 2 decks +50% synergy
Erratic Explosion
50% of 2 decks +50% synergy
Kaboom!
50% of 2 decks +50% synergy
Doomsday
50% of 2 decks +49% synergy
Grim Tutor
50% of 2 decks +44% synergy
Diabolic Intent
50% of 2 decks +41% synergy
Mana Geyser
50% of 2 decks +39% synergy
Demonic Tutor
50% of 2 decks +30% synergy
Jeska's Will
50% of 2 decks +22% synergy
Blasphemous Act
50% of 2 decks +1% synergy
Utility Artifacts
Ashnod's Altar
100% of 2 decks +88% synergy
Jar of Eyeballs
50% of 2 decks +50% synergy
Soldevi Digger
50% of 2 decks +50% synergy
Goblin Charbelcher
50% of 2 decks +50% synergy
Teferi's Puzzle Box
50% of 2 decks +49% synergy
Altar of Bhaal
50% of 2 decks +49% synergy
Panharmonicon
50% of 2 decks +49% synergy
Elixir of Immortality
50% of 2 decks +49% synergy
Desecrated Tomb
50% of 2 decks +49% synergy
Cloudstone Curio
50% of 2 decks +48% synergy
Heartstone
50% of 2 decks +48% synergy
Wishclaw Talisman
50% of 2 decks +43% synergy
Enchantments
The Brothers' War
100% of 1 decks +100% synergy
Visions of Phyrexia
100% of 1 decks +98% synergy
Mindmoil
50% of 2 decks +50% synergy
Braid of Fire
50% of 2 decks +49% synergy
Black Market
50% of 2 decks +44% synergy
Bastion of Remembrance
50% of 2 decks +44% synergy
Impact Tremors
50% of 2 decks +38% synergy
Utility Lands
Inventors' Fair
50% of 2 decks +48% synergy
Zhalfirin Void
50% of 2 decks +48% synergy
Buried Ruin
50% of 2 decks +46% synergy
Ancient Tomb
50% of 2 decks +38% synergy
Mana Artifacts
Gilded Lotus
50% of 2 decks +47% synergy
Rakdos Signet
50% of 2 decks -15% synergy
Arcane Signet
50% of 2 decks -33% synergy
Sol Ring
50% of 2 decks -37% synergy
Lands
Hall of Tagsin
100% of 1 decks +100% synergy
Luxury Suite
100% of 2 decks +59% synergy
Gemstone Caverns
50% of 2 decks +45% synergy
Prismatic Vista
50% of 2 decks +43% synergy
Marsh Flats
50% of 2 decks +41% synergy
Arid Mesa
50% of 2 decks +40% synergy
Terramorphic Expanse
50% of 2 decks +34% synergy
Canyon Slough
50% of 2 decks +34% synergy
Evolving Wilds
50% of 2 decks +28% synergy
Graven Cairns
50% of 2 decks +26% synergy
Blightstep Pathway
50% of 2 decks +24% synergy
Bloodstained Mire
50% of 2 decks +21% synergy
Temple of Malice
50% of 2 decks +15% synergy
Tainted Peak
50% of 2 decks +12% synergy
Rakdos Carnarium
50% of 2 decks +12% synergy
Sulfurous Springs
50% of 2 decks +8% synergy
Blood Crypt
50% of 2 decks +5% synergy
Foreboding Ruins
50% of 2 decks +4% synergy
Dragonskull Summit
50% of 2 decks -7% synergy
Command Tower
50% of 2 decks -36% synergy