Saffi Eriksdotter + Eternal Witness + Aluren + Phyrexian Altar

Saffi Eriksdotter
Eternal Witness
Aluren
Phyrexian Altar

Requires
Saffi Eriksdotter must be on the battlefield. Eternal Witness must be on the battlefield. Aluren must be on the battlefield. Phyrexian Altar must be on the battlefield.
Steps
  1. Activate Saffi by sacrificing it, targeting Eternal Witness.
  2. Activate Phyrexian Altar by sacrificing Eternal Witness, adding one mana of any color.
  3. When Eternal Witness dies, Saffi triggers, returning it from your graveyard to the battlefield.
  4. When Eternal Witness enters the battlefield, it triggers, returning Saffi from your graveyard to your hand.
  5. Cast Saffi by paying 0 due to Aluren.
  6. Repeat.
Results
Infinite colored mana. Infinite death triggers. Infinite ETB. Infinite LTB. Infinite sacrifice triggers. Infinite storm count.

Top Commanders (3)
Saffi Eriksdotter
1.33% of 528 decks 7 decks
Asmira, Holy Avenger
1.17% of 343 decks 4 decks
Othelm, Sigardian Outcast // Wernog, Rider's Chaplain
0.43% of 935 decks 4 decks
High Synergy Cards (10)
Goblin Bombardment
100% of 6 decks +97% synergy
Viscera Seer
91% of 11 decks +85% synergy
Renegade Rallier
66% of 32 decks +66% synergy
Enlightened Tutor
73% of 33 decks +64% synergy
Karmic Guide
67% of 33 decks +64% synergy
Eladamri's Call
64% of 33 decks +61% synergy
Shrieking Drake
57% of 7 decks +57% synergy
Reveillark
58% of 33 decks +56% synergy
Reanimate
64% of 11 decks +56% synergy
Avacyn's Pilgrim
59% of 32 decks +56% synergy
Top Cards (10)
Swords to Plowshares
70% of 33 decks +41% synergy
Ashnod's Altar
61% of 33 decks +53% synergy
Birds of Paradise
58% of 33 decks +46% synergy
Noble Hierarch
57% of 7 decks +55% synergy
Elves of Deep Shadow
55% of 11 decks +52% synergy
Carrion Feeder
55% of 11 decks +52% synergy
Diabolic Intent
55% of 11 decks +50% synergy
Animate Dead
55% of 11 decks +50% synergy
Delighted Halfling
55% of 11 decks +47% synergy
Sun Titan
52% of 33 decks +46% synergy
Creatures (50)
Horned Kavu
50% of 6 decks +50% synergy
Grinning Ignus
50% of 6 decks +50% synergy
Chulane, Teller of Tales
50% of 6 decks +49% synergy
Fiend Artisan
50% of 10 decks +49% synergy
Squee, the Immortal
50% of 6 decks +49% synergy
Zulaport Cutthroat
45% of 11 decks +40% synergy
Recruiter of the Guard
44% of 32 decks +42% synergy
Man-o'-War
43% of 7 decks +43% synergy
Spellseeker
43% of 7 decks +41% synergy
Esper Sentinel
41% of 29 decks +32% synergy
Ranger-Captain of Eos
41% of 32 decks +38% synergy
Acererak the Archlich
40% of 10 decks +40% synergy
Lurrus of the Dream-Den
40% of 10 decks +39% synergy
Corpse Knight
40% of 10 decks +39% synergy
Sakura-Tribe Elder
39% of 33 decks +30% synergy
Llanowar Elves
39% of 33 decks +29% synergy
Grand Abolisher
38% of 32 decks +34% synergy
Grim Haruspex
36% of 11 decks +34% synergy
Blood Artist
36% of 11 decks +30% synergy
Fyndhorn Elves
33% of 33 decks +26% synergy
Luminous Broodmoth
32% of 31 decks +31% synergy
Spore Frog
30% of 33 decks +29% synergy
Body Launderer
30% of 10 decks +29% synergy
Woe Strider
30% of 10 decks +28% synergy
Opposition Agent
30% of 10 decks +26% synergy
Dauthi Voidwalker
30% of 10 decks +25% synergy
Beast Whisperer
28% of 32 decks +22% synergy
Protean Hulk
27% of 33 decks +26% synergy
Pawn of Ulamog
27% of 11 decks +26% synergy
Cruel Celebrant
27% of 11 decks +25% synergy
Pitiless Plunderer
27% of 11 decks +23% synergy
Extraction Specialist
26% of 27 decks +26% synergy
Academy Rector
24% of 33 decks +24% synergy
Wood Elves
24% of 33 decks +20% synergy
Endurance
24% of 29 decks +23% synergy
Drannith Magistrate
23% of 31 decks +19% synergy
Loran of the Third Path
22% of 18 decks +19% synergy
Walking Ballista
22% of 32 decks +19% synergy
Kitchen Finks
21% of 33 decks +21% synergy
Devoted Druid
21% of 33 decks +20% synergy
Solitude
21% of 29 decks +20% synergy
Vizier of Remedies
19% of 32 decks +19% synergy
Elvish Mystic
19% of 32 decks +10% synergy
Stonecloaker
18% of 33 decks +18% synergy
Whitemane Lion
18% of 33 decks +18% synergy
Qasali Pridemage
18% of 33 decks +18% synergy
Heliod, Sun-Crowned
16% of 31 decks +15% synergy
Haywire Mite
16% of 19 decks +14% synergy
Fiend Hunter
16% of 32 decks +15% synergy
Felidar Guardian
16% of 32 decks +14% synergy
Instants (27)
Vampiric Tutor
73% of 11 decks +63% synergy
Worldly Tutor
52% of 33 decks +45% synergy
Path to Exile
52% of 33 decks +32% synergy
Entomb
45% of 11 decks +42% synergy
Assassin's Trophy
45% of 11 decks +39% synergy
Growth Spiral
43% of 7 decks +38% synergy
Counterspell
43% of 7 decks +22% synergy
Chord of Calling
42% of 33 decks +40% synergy
Anguished Unmaking
36% of 11 decks +31% synergy
Beast Within
30% of 33 decks +11% synergy
Malakir Rebirth
30% of 10 decks +25% synergy
Deadly Dispute
30% of 10 decks +24% synergy
Force of Vigor
25% of 32 decks +23% synergy
Cosmic Rebirth
23% of 13 decks +22% synergy
Generous Gift
23% of 31 decks +11% synergy
Teferi's Protection
22% of 32 decks +12% synergy
Heroic Intervention
22% of 32 decks +8% synergy
Silence
21% of 33 decks +18% synergy
Veil of Summer
19% of 31 decks +16% synergy
Nature's Claim
15% of 33 decks +10% synergy
Eerie Interlude
12% of 32 decks +10% synergy
Rite of Harmony
10% of 29 decks +10% synergy
Brought Back
10% of 31 decks +9% synergy
Ephemerate
10% of 31 decks +7% synergy
Noxious Revival
9% of 33 decks +6% synergy
Krosan Grip
9% of 33 decks +5% synergy
Crop Rotation
9% of 33 decks +5% synergy
Sorceries (21)
Demonic Tutor
64% of 11 decks +51% synergy
Neoform
43% of 7 decks +42% synergy
Green Sun's Zenith
42% of 33 decks +39% synergy
Damn
40% of 10 decks +36% synergy
Toxic Deluge
36% of 11 decks +28% synergy
Eldritch Evolution
31% of 32 decks +29% synergy
Unearth
27% of 11 decks +25% synergy
Dread Return
27% of 11 decks +25% synergy
Victimize
27% of 11 decks +21% synergy
Nature's Lore
27% of 33 decks +13% synergy
Finale of Devastation
25% of 32 decks +21% synergy
Three Visits
24% of 33 decks +13% synergy
Sevinne's Reclamation
23% of 31 decks +19% synergy
Bala Ged Recovery
17% of 29 decks +13% synergy
Idyllic Tutor
15% of 33 decks +13% synergy
Farseek
15% of 33 decks -1% synergy
Glimpse of Nature
12% of 33 decks +12% synergy
Skyshroud Claim
12% of 33 decks +7% synergy
Sylvan Tutor
9% of 33 decks +9% synergy
Kodama's Reach
9% of 33 decks -6% synergy
Cultivate
9% of 33 decks -13% synergy
Utility Artifacts (9)
Altar of Dementia
45% of 33 decks +42% synergy
Birthing Pod
36% of 33 decks +35% synergy
Blasting Station
33% of 33 decks +33% synergy
Skullclamp
30% of 33 decks +18% synergy
Cloudstone Curio
21% of 33 decks +20% synergy
Altar of the Brood
16% of 32 decks +14% synergy
Lightning Greaves
15% of 33 decks -10% synergy
Relic Vial
10% of 29 decks +10% synergy
Sensei's Divining Top
9% of 33 decks +3% synergy
Enchantments (26)
Survival of the Fittest
33% of 33 decks +32% synergy
Sylvan Library
27% of 33 decks +21% synergy
Smothering Tithe
25% of 32 decks +13% synergy
Pattern of Rebirth
24% of 33 decks +24% synergy
Aura Shards
24% of 33 decks +22% synergy
Guardian Project
19% of 32 decks +15% synergy
Fecundity
18% of 33 decks +18% synergy
Sterling Grove
18% of 33 decks +16% synergy
Martyr's Bond
16% of 32 decks +15% synergy
Enduring Renewal
15% of 33 decks +15% synergy
Martyr's Cause
15% of 33 decks +15% synergy
Greater Good
15% of 33 decks +13% synergy
Swift Reconfiguration
15% of 27 decks +14% synergy
Abiding Grace
14% of 29 decks +14% synergy
Deafening Silence
13% of 31 decks +11% synergy
Angelic Renewal
12% of 33 decks +12% synergy
Earthcraft
12% of 33 decks +12% synergy
Fanatical Devotion
12% of 33 decks +12% synergy
Mirari's Wake
12% of 33 decks +9% synergy
Gutter Grime
9% of 32 decks +9% synergy
Ulvenwald Mysteries
9% of 32 decks +9% synergy
Gift of Immortality
9% of 32 decks +8% synergy
Blind Obedience
9% of 32 decks +6% synergy
Anointed Procession
9% of 32 decks +5% synergy
Defense of the Heart
9% of 33 decks +8% synergy
Wild Growth
9% of 33 decks +4% synergy
Planeswalkers (1)
Vivien on the Hunt
11% of 27 decks +11% synergy
Utility Lands (17)
Phyrexian Tower
64% of 11 decks +59% synergy
Boseiju, Who Endures
54% of 28 decks +44% synergy
Takenuma, Abandoned Mire
40% of 10 decks +34% synergy
Yavimaya, Cradle of Growth
34% of 29 decks +25% synergy
Ancient Tomb
30% of 33 decks +19% synergy
Grim Backwoods
27% of 11 decks +26% synergy
Gaea's Cradle
24% of 33 decks +22% synergy
Emeria, the Sky Ruin
21% of 33 decks +20% synergy
Urborg, Tomb of Yawgmoth
21% of 33 decks +11% synergy
High Market
18% of 33 decks +15% synergy
Dryad Arbor
15% of 33 decks +13% synergy
Gavony Township
12% of 32 decks +10% synergy
Emergence Zone
12% of 32 decks +10% synergy
Strip Mine
12% of 33 decks +9% synergy
Reliquary Tower
12% of 33 decks -16% synergy
Eiganjo, Seat of the Empire
11% of 27 decks +6% synergy
Urza's Saga
10% of 29 decks +3% synergy
Mana Artifacts (12)
Sol Ring
73% of 33 decks -12% synergy
Arcane Signet
35% of 31 decks -35% synergy
Mana Crypt
27% of 33 decks +16% synergy
Lotus Petal
21% of 33 decks +15% synergy
Chrome Mox
18% of 33 decks +12% synergy
Mox Amber
16% of 32 decks +12% synergy
Selesnya Signet
15% of 33 decks +13% synergy
Mox Diamond
15% of 33 decks +11% synergy
Talisman of Unity
12% of 33 decks +11% synergy
Mana Vault
12% of 33 decks +6% synergy
Jeweled Lotus
10% of 29 decks +3% synergy
Fellwar Stone
9% of 33 decks -12% synergy
Lands (50)
Overgrown Tomb
100% of 11 decks +91% synergy
Godless Shrine
100% of 11 decks +90% synergy
Temple Garden
94% of 33 decks +85% synergy
Breeding Pool
86% of 7 decks +76% synergy
Sacred Foundry
83% of 6 decks +75% synergy
Windswept Heath
76% of 33 decks +66% synergy
Command Tower
75% of 32 decks +2% synergy
Jetmir's Garden
75% of 4 decks +71% synergy
Hallowed Fountain
71% of 7 decks +62% synergy
Indatha Triome
70% of 10 decks +66% synergy
Verdant Catacombs
67% of 33 decks +55% synergy
Savannah
61% of 33 decks +58% synergy
Undergrowth Stadium
60% of 10 decks +54% synergy
Vault of Champions
60% of 10 decks +54% synergy
Bountiful Promenade
59% of 32 decks +54% synergy
Tundra
57% of 7 decks +54% synergy
Tropical Island
57% of 7 decks +54% synergy
Marsh Flats
55% of 33 decks +43% synergy
Sunpetal Grove
52% of 33 decks +47% synergy
Spara's Headquarters
50% of 6 decks +46% synergy
Stomping Ground
50% of 6 decks +41% synergy
Misty Rainforest
48% of 33 decks +37% synergy
Horizon Canopy
45% of 33 decks +44% synergy
Silent Clearing
45% of 11 decks +44% synergy
Nurturing Peatland
45% of 11 decks +44% synergy
Sea of Clouds
43% of 7 decks +37% synergy
Brushland
42% of 33 decks +40% synergy
Wooded Foothills
42% of 33 decks +33% synergy
Arid Mesa
42% of 33 decks +31% synergy
Flooded Strand
39% of 33 decks +29% synergy
City of Brass
33% of 33 decks +25% synergy
Canopy Vista
28% of 32 decks +21% synergy
Murmuring Bosk
27% of 11 decks +26% synergy
Bayou
27% of 11 decks +24% synergy
Scrubland
27% of 11 decks +24% synergy
Woodland Cemetery
27% of 11 decks +22% synergy
Isolated Chapel
27% of 11 decks +21% synergy
Prismatic Vista
25% of 32 decks +19% synergy
Exotic Orchard
24% of 33 decks -10% synergy
Scattered Groves
22% of 32 decks +20% synergy
Mana Confluence
22% of 32 decks +14% synergy
Bloodstained Mire
18% of 33 decks +8% synergy
Temple of Plenty
16% of 32 decks +13% synergy
Razorverge Thicket
15% of 33 decks +14% synergy
Polluted Delta
15% of 33 decks +4% synergy
Scalding Tarn
15% of 33 decks +4% synergy
Branchloft Pathway
14% of 29 decks +12% synergy
Overgrown Farmland
14% of 29 decks +10% synergy
Wooded Bastion
12% of 33 decks +11% synergy
Krosan Verge
12% of 33 decks +9% synergy