Deathrender + Gravedigger + Eternal Witness + Phyrexian Altar

Deathrender
Gravedigger
Eternal Witness
Phyrexian Altar

Requires
Deathrender must be on the battlefield. Gravedigger must be in hand. Eternal Witness must be on the battlefield. Phyrexian Altar must be on the battlefield. Deathrender attached to Eternal Witness.
Steps
  1. Activate Phyrexian Altar by sacrificing Eternal Witness, adding one mana of any color.
  2. Eternal Witness dies, triggering Deathrender, putting Gravedigger from your hand onto the battlefield and attaching Deathrender to it.
  3. Gravedigger enters the battlefield, returning Eternal Witness from your graveyard to your hand.
  4. Activate Phyrexian Altar by sacrificing Gravedigger, adding one mana of any color.
  5. Gravedigger dies, triggering Deathrender, putting Eternal Witness from your hand onto the battlefield and attaching Deathrender to it.
  6. Eternal Witness enters the battlefield, returning Gravedigger from your graveyard to your hand.
  7. Repeat.
Results
Infinite colored mana. Infinite death triggers. Infinite ETB. Infinite LTB. Infinite sacrifice triggers.

Sivriss, Nightmare Speaker // Cloakwood Hermit
0.13% of 789 decks 1 decks
Varolz, the Scar-Striped
0.08% of 1212 decks 1 decks
Jarad, Golgari Lich Lord
0.03% of 3868 decks 1 decks
Lord Windgrace
0.01% of 9042 decks 1 decks
Meren of Clan Nel Toth
0.01% of 14649 decks 1 decks
Creatures
Glorybringer
100% of 1 decks +100% synergy
The Mycotyrant
100% of 1 decks +98% synergy
Dockside Extortionist
100% of 1 decks +86% synergy
Woodfall Primus
60% of 5 decks +59% synergy
Plaguecrafter
60% of 5 decks +55% synergy
Yargle and Multani
50% of 2 decks +47% synergy
Melira, Sylvok Outcast
40% of 5 decks +40% synergy
Skullwinder
40% of 5 decks +39% synergy
Lord of Extinction
40% of 5 decks +38% synergy
Izoni, Thousand-Eyed
40% of 5 decks +38% synergy
Mikaeus, the Unhallowed
40% of 5 decks +37% synergy
Meren of Clan Nel Toth
40% of 5 decks +37% synergy
The Gitrog Monster
40% of 5 decks +35% synergy
Ramunap Excavator
40% of 5 decks +33% synergy
Viscera Seer
40% of 5 decks +30% synergy
Avenger of Zendikar
40% of 5 decks +30% synergy
Sakura-Tribe Elder
40% of 5 decks +21% synergy
Vengeful Strangler
25% of 4 decks +25% synergy
Erinis, Gloom Stalker
25% of 4 decks +24% synergy
Acererak the Archlich
25% of 4 decks +24% synergy
Body Launderer
25% of 4 decks +24% synergy
Defiler of Flesh
25% of 4 decks +24% synergy
Daemogoth Titan
25% of 4 decks +23% synergy
Shigeki, Jukai Visionary
25% of 4 decks +23% synergy
Ravenous Squirrel
25% of 4 decks +22% synergy
Timeless Witness
25% of 4 decks +22% synergy
Chatterfang, Squirrel General
25% of 4 decks +20% synergy
Braids, Arisen Nightmare
25% of 4 decks +17% synergy
Tunneler Wurm
20% of 5 decks +20% synergy
Hag Hedge-Mage
20% of 5 decks +20% synergy
Signpost Scarecrow
20% of 5 decks +20% synergy
Nyxathid
20% of 5 decks +20% synergy
Pit Keeper
20% of 5 decks +20% synergy
Blood Bairn
20% of 5 decks +20% synergy
Permeating Mass
20% of 5 decks +20% synergy
Liege of the Hollows
20% of 5 decks +20% synergy
Phyrexian Devourer
20% of 5 decks +20% synergy
Old-Growth Dryads
20% of 5 decks +20% synergy
Force of Savagery
20% of 5 decks +20% synergy
Aerie Ouphes
20% of 5 decks +20% synergy
Phyrexian Dreadnought
20% of 5 decks +20% synergy
Eater of Days
20% of 5 decks +20% synergy
Groundbreaker
20% of 5 decks +20% synergy
Lupine Prototype
20% of 5 decks +20% synergy
Rendclaw Trow
20% of 5 decks +20% synergy
Death's Shadow
20% of 5 decks +20% synergy
Squirrel Wrangler
20% of 5 decks +20% synergy
Wild Mongrel
20% of 5 decks +20% synergy
Lesser Masticore
20% of 5 decks +20% synergy
Myr Superion
20% of 5 decks +20% synergy
Instants
Ancient Grudge
100% of 1 decks +99% synergy
Vampiric Tutor
60% of 5 decks +41% synergy
Dark Ritual
60% of 5 decks +38% synergy
Harrow
40% of 5 decks +30% synergy
Astarion's Thirst
25% of 4 decks +24% synergy
Natural Selection
20% of 5 decks +20% synergy
Hatred
20% of 5 decks +20% synergy
Fatal Push
20% of 5 decks +19% synergy
Curtains' Call
20% of 5 decks +19% synergy
Murder
20% of 5 decks +17% synergy
Culling the Weak
20% of 5 decks +16% synergy
Grisly Salvage
20% of 5 decks +15% synergy
Chord of Calling
20% of 5 decks +14% synergy
Entomb
20% of 5 decks +13% synergy
Crop Rotation
20% of 5 decks +10% synergy
Abrupt Decay
20% of 5 decks +9% synergy
Worldly Tutor
20% of 5 decks +6% synergy
Assassin's Trophy
20% of 5 decks -10% synergy
Beast Within
20% of 5 decks -19% synergy
Sorceries
Gamble
100% of 1 decks +90% synergy
Buried Alive
60% of 5 decks +54% synergy
Gaea's Blessing
40% of 5 decks +39% synergy
Jarad's Orders
40% of 5 decks +38% synergy
Life from the Loam
40% of 5 decks +36% synergy
Splendid Reclamation
40% of 5 decks +36% synergy
Dread Return
40% of 5 decks +35% synergy
Victimize
40% of 5 decks +28% synergy
Reanimate
40% of 5 decks +25% synergy
Demonic Tutor
40% of 5 decks +17% synergy
Cultivate
40% of 5 decks -7% synergy
Threats Undetected
25% of 4 decks +24% synergy
Bone Shards
25% of 4 decks +23% synergy
Life's Finale
20% of 5 decks +20% synergy
Inquisition of Kozilek
20% of 5 decks +20% synergy
Driven // Despair
20% of 5 decks +20% synergy
Traverse the Ulvenwald
20% of 5 decks +20% synergy
Call of the Death-Dweller
20% of 5 decks +20% synergy
Mastermind's Acquisition
20% of 5 decks +20% synergy
Hex
20% of 5 decks +19% synergy
Mire in Misery
20% of 5 decks +19% synergy
Thoughtseize
20% of 5 decks +19% synergy
Dark Petition
20% of 5 decks +19% synergy
Far Wanderings
20% of 5 decks +19% synergy
Hour of Promise
20% of 5 decks +19% synergy
Find // Finality
20% of 5 decks +18% synergy
Life // Death
20% of 5 decks +18% synergy
Maelstrom Pulse
20% of 5 decks +18% synergy
Natural Order
20% of 5 decks +18% synergy
Scapeshift
20% of 5 decks +17% synergy
Decree of Pain
20% of 5 decks +17% synergy
Traverse the Outlands
20% of 5 decks +17% synergy
Explosive Vegetation
20% of 5 decks +17% synergy
Grim Tutor
20% of 5 decks +15% synergy
Living Death
20% of 5 decks +15% synergy
Green Sun's Zenith
20% of 5 decks +14% synergy
Read the Bones
20% of 5 decks +12% synergy
Damnation
20% of 5 decks +12% synergy
Finale of Devastation
20% of 5 decks +12% synergy
Toxic Deluge
20% of 5 decks +3% synergy
Kodama's Reach
20% of 5 decks -12% synergy
Farseek
20% of 5 decks -14% synergy
Rampant Growth
20% of 5 decks -15% synergy
Utility Artifacts
Crucible of Worlds
60% of 5 decks +57% synergy
Vat of Rebirth
50% of 2 decks +48% synergy
Conduit of Worlds
50% of 2 decks +43% synergy
Altar of Dementia
40% of 5 decks +37% synergy
Ashnod's Altar
40% of 5 decks +32% synergy
Skullclamp
40% of 5 decks +27% synergy
Lightning Greaves
40% of 5 decks +15% synergy
Swiftfoot Boots
40% of 5 decks +12% synergy
Inscribed Tablet
25% of 4 decks +25% synergy
Chitterspitter
25% of 4 decks +24% synergy
Moonsilver Key
25% of 4 decks +23% synergy
Cauldron of Souls
20% of 5 decks +19% synergy
Executioner's Capsule
20% of 5 decks +19% synergy
Blade of the Bloodchief
20% of 5 decks +19% synergy
Thornbite Staff
20% of 5 decks +19% synergy
Umbral Mantle
20% of 5 decks +19% synergy
Rhonas's Monument
20% of 5 decks +19% synergy
Zuran Orb
20% of 5 decks +19% synergy
Contagion Clasp
20% of 5 decks +19% synergy
Conjurer's Closet
20% of 5 decks +18% synergy
Bontu's Monument
20% of 5 decks +18% synergy
The Ozolith
20% of 5 decks +17% synergy
Aetherflux Reservoir
20% of 5 decks +16% synergy
Wayfarer's Bauble
20% of 5 decks +10% synergy
Enchantments
Chalk Outline
100% of 1 decks +100% synergy
Tectonic Reformation
100% of 1 decks +99% synergy
Mana Echoes
100% of 1 decks +99% synergy
Insidious Roots
100% of 1 decks +91% synergy
Doubling Season
40% of 5 decks +31% synergy
Animate Dead
40% of 5 decks +31% synergy
Strands of Night
20% of 5 decks +20% synergy
Cream of the Crop
20% of 5 decks +20% synergy
Fallen Ideal
20% of 5 decks +20% synergy
Aluren
20% of 5 decks +20% synergy
Earthcraft
20% of 5 decks +19% synergy
Fecundity
20% of 5 decks +19% synergy
Helix Pinnacle
20% of 5 decks +19% synergy
Squirrel Nest
20% of 5 decks +19% synergy
Underworld Connections
20% of 5 decks +19% synergy
Abundant Growth
20% of 5 decks +19% synergy
Tortured Existence
20% of 5 decks +18% synergy
Oversold Cemetery
20% of 5 decks +18% synergy
Pernicious Deed
20% of 5 decks +18% synergy
Defense of the Heart
20% of 5 decks +17% synergy
Necromancy
20% of 5 decks +17% synergy
Journey to Eternity
20% of 5 decks +17% synergy
Phyrexian Reclamation
20% of 5 decks +16% synergy
Burgeoning
20% of 5 decks +16% synergy
Kaya's Ghostform
20% of 5 decks +16% synergy
Grave Pact
20% of 5 decks +16% synergy
Greater Good
20% of 5 decks +15% synergy
Exploration
20% of 5 decks +12% synergy
Hardened Scales
20% of 5 decks +11% synergy
Wild Growth
20% of 5 decks +9% synergy
Sylvan Library
20% of 5 decks +8% synergy
Phyrexian Arena
20% of 5 decks +5% synergy
Planeswalkers
Liliana, the Last Hope
20% of 5 decks +19% synergy
Nissa, Vital Force
20% of 5 decks +19% synergy
Garruk, Cursed Huntsman
20% of 5 decks +18% synergy
Vraska, Golgari Queen
20% of 5 decks +17% synergy
Utility Lands
Valakut, the Molten Pinnacle
100% of 1 decks +98% synergy
Raging Ravine
100% of 1 decks +97% synergy
Bojuka Bog
60% of 5 decks +30% synergy
Polluted Mire
40% of 5 decks +39% synergy
Wasteland
40% of 5 decks +39% synergy
Field of the Dead
40% of 5 decks +37% synergy
Barren Moor
40% of 5 decks +36% synergy
Phyrexian Tower
40% of 5 decks +32% synergy
Urborg, Tomb of Yawgmoth
40% of 5 decks +30% synergy
Reliquary Tower
40% of 5 decks +11% synergy
The Tabernacle at Pendrell Vale
20% of 5 decks +20% synergy
Spawning Pool
20% of 5 decks +20% synergy
Detection Tower
20% of 5 decks +19% synergy
Sanctum of Eternity
20% of 5 decks +19% synergy
Svogthos, the Restless Tomb
20% of 5 decks +19% synergy
Drownyard Temple
20% of 5 decks +19% synergy
Eldrazi Temple
20% of 5 decks +19% synergy
Dark Depths
20% of 5 decks +19% synergy
Volrath's Stronghold
20% of 5 decks +19% synergy
Dakmor Salvage
20% of 5 decks +18% synergy
Field of Ruin
20% of 5 decks +18% synergy
Ghost Quarter
20% of 5 decks +17% synergy
Thespian's Stage
20% of 5 decks +17% synergy
Maze of Ith
20% of 5 decks +17% synergy
Strip Mine
20% of 5 decks +17% synergy
High Market
20% of 5 decks +17% synergy
Scavenger Grounds
20% of 5 decks +17% synergy
Geier Reach Sanitarium
20% of 5 decks +16% synergy
Tranquil Thicket
20% of 5 decks +16% synergy
Grim Backwoods
20% of 5 decks +16% synergy
Dryad Arbor
20% of 5 decks +16% synergy
Shizo, Death's Storehouse
20% of 5 decks +15% synergy
Mortuary Mire
20% of 5 decks +15% synergy
Buried Ruin
20% of 5 decks +15% synergy
Gaea's Cradle
20% of 5 decks +14% synergy
Cabal Coffers
20% of 5 decks +9% synergy
Rogue's Passage
20% of 5 decks +1% synergy
Mana Artifacts
Sol Ring
80% of 5 decks -5% synergy
Golgari Signet
40% of 5 decks +27% synergy
Arcane Signet
40% of 5 decks -32% synergy
Golgari Locket
20% of 5 decks +19% synergy
Mox Diamond
20% of 5 decks +16% synergy
Talisman of Resilience
20% of 5 decks +9% synergy
Lands
Blackcleave Cliffs
100% of 1 decks +95% synergy
Sheltered Thicket
100% of 1 decks +93% synergy
Graven Cairns
100% of 1 decks +92% synergy
Badlands
100% of 1 decks +86% synergy
Underground Mortuary
100% of 1 decks +83% synergy
Sulfurous Springs
100% of 1 decks +80% synergy
Stomping Ground
100% of 1 decks +59% synergy
Verdant Catacombs
80% of 5 decks +68% synergy
Overgrown Tomb
80% of 5 decks +37% synergy
Command Tower
80% of 5 decks +6% synergy
Golgari Rot Farm
60% of 5 decks +42% synergy
Woodland Cemetery
60% of 5 decks +33% synergy
Jungle Hollow
40% of 5 decks +31% synergy
Twilight Mire
40% of 5 decks +30% synergy
Bayou
40% of 5 decks +26% synergy
Temple of Malady
40% of 5 decks +24% synergy
Evolving Wilds
40% of 5 decks +19% synergy
Llanowar Wastes
40% of 5 decks +15% synergy
Riveteers Overlook
25% of 4 decks +23% synergy
Darkmoss Bridge
25% of 4 decks +22% synergy
Woodland Chasm
25% of 4 decks +20% synergy
Haunted Mire
25% of 4 decks +17% synergy
Darkbore Pathway
25% of 4 decks +16% synergy
Ash Barrens
20% of 5 decks +15% synergy
Fabled Passage
20% of 5 decks +11% synergy
Bloodstained Mire
20% of 5 decks +10% synergy
Marsh Flats
20% of 5 decks +9% synergy
Misty Rainforest
20% of 5 decks +8% synergy
Tainted Wood
20% of 5 decks +7% synergy
Myriad Landscape
20% of 5 decks +0% synergy
Undergrowth Stadium
20% of 5 decks -6% synergy