Sunforger + Chance for Glory + Angel's Grace + Epitaph Golem

Sunforger
Chance for Glory
Angel's Grace
Epitaph Golem

Requires
Sunforger must be on the battlefield. Chance for Glory must be in the library. Angel's Grace must be in the library. Epitaph Golem must be on the battlefield. Sunforger attached to a creature you control. Mana needed: 2 the first turn, with 10 available each extra turn
Steps
  1. Activate Sunforger by paying and unattaching it, searching your library for Chance for Glory and casting it without paying its mana cost.
  2. Resolve Chance for Glory, causing you to take an extra turn after this one.
  3. Activate Epitaph Golem by paying 2, putting Chance for Glory on the bottom of your library from your graveyard.
  4. Move to your next turn.
  5. Activate Sunforger's equip ability by paying 3, attaching it to a creature you control.
  6. Repeat steps 1 through 3 one additional time.
  7. Activate Sunforger's equip ability by paying 3, attaching it to a creature you control.
  8. Activate Sunforger by paying and unattaching it, searching your library for Angel's Grace and casting it without paying its mana cost.
  9. Resolve Angel's Grace, preventing you from losing the game this turn.
  10. Activate Epitaph Golem by paying 2, putting Angel's Grace on the bottom of your library from your graveyard.
  11. At the beginning of your end step, Chance for Glory triggers, however you cannot lose the game due to Angel's Grace.
  12. Repeat from step 4.
Results
Infinite turns.

Aisha of Sparks and Smoke
0.16% of 1261 decks 2 decks
Zirda, the Dawnwaker
0.12% of 1718 decks 2 decks
Otharri, Suns' Glory
0.11% of 3757 decks 4 decks
Kellan, the Fae-Blooded
0.09% of 2225 decks 2 decks
Gisela, Blade of Goldnight
0.04% of 2245 decks 1 decks
Ardenn, Intrepid Archaeologist // Rograkh, Son of Rohgahh
0.02% of 5892 decks 1 decks
High Synergy Cards
Final Showdown
83% of 6 decks +76% synergy
Reito Sentinel
75% of 12 decks +75% synergy
Great Train Heist
83% of 6 decks +75% synergy
Mistveil Plains
75% of 12 decks +71% synergy
Grim Reaper's Sprint
67% of 6 decks +62% synergy
Claim Jumper
67% of 6 decks +58% synergy
Final Fortune
58% of 12 decks +58% synergy
Brash Taunter
50% of 12 decks +44% synergy
Hexplate Wallbreaker
55% of 11 decks +43% synergy
Chimil, the Inner Sun
44% of 9 decks +42% synergy
Top Cards
Swords to Plowshares
75% of 12 decks +7% synergy
Esper Sentinel
67% of 12 decks +38% synergy
Boros Charm
67% of 12 decks +10% synergy
Generous Gift
58% of 12 decks +18% synergy
Aurelia, the Law Above
57% of 7 decks +40% synergy
Sejiri Shelter
50% of 12 decks +40% synergy
Dockside Extortionist
50% of 12 decks +36% synergy
Karlach, Fury of Avernus
45% of 11 decks +39% synergy
Glimmer Lens
45% of 11 decks +35% synergy
Ojer Taq, Deepest Foundation
44% of 9 decks +37% synergy
Creatures
Roaming Throne
44% of 9 decks +37% synergy
Burnished Hart
42% of 12 decks +33% synergy
Stoneforge Mystic
42% of 12 decks +29% synergy
Aurelia, the Warleader
42% of 12 decks +26% synergy
Elesh Norn, Mother of Machines
36% of 11 decks +34% synergy
Mondrak, Glory Dominus
36% of 11 decks +27% synergy
Neyali, Suns' Vanguard
36% of 11 decks +24% synergy
Ulamog, the Infinite Gyre
33% of 12 decks +33% synergy
Archangel of Thune
33% of 12 decks +32% synergy
Brass Squire
33% of 12 decks +29% synergy
Welcoming Vampire
33% of 12 decks +27% synergy
Iroas, God of Victory
33% of 12 decks +23% synergy
Loyal Apprentice
33% of 12 decks +20% synergy
Deep Gnome Terramancer
27% of 11 decks +23% synergy
Archivist of Oghma
27% of 11 decks +19% synergy
Cloudsteel Kirin
25% of 12 decks +20% synergy
Godo, Bandit Warlord
25% of 12 decks +19% synergy
Sun Titan
25% of 12 decks +8% synergy
Solemn Simulacrum
25% of 12 decks +2% synergy
Instants
True Love's Kiss
42% of 12 decks +42% synergy
Pull from Eternity
42% of 12 decks +40% synergy
Deflecting Palm
42% of 12 decks +25% synergy
Teferi's Protection
42% of 12 decks +21% synergy
Clever Concealment
36% of 11 decks +27% synergy
Restrain
33% of 12 decks +33% synergy
Fateful Absence
33% of 12 decks +32% synergy
Shelter
33% of 12 decks +26% synergy
Pyroblast
25% of 12 decks +19% synergy
Valakut Awakening
25% of 12 decks +16% synergy
Abrade
25% of 12 decks +12% synergy
Enlightened Tutor
25% of 12 decks +6% synergy
Wear // Tear
25% of 12 decks -2% synergy
Path to Exile
25% of 12 decks -30% synergy
Sorceries
Emeria's Call
33% of 12 decks +30% synergy
Wrath of God
33% of 12 decks +26% synergy
Farewell
33% of 12 decks +22% synergy
Open the Armory
33% of 12 decks +15% synergy
Last Chance
25% of 12 decks +25% synergy
Sevinne's Reclamation
25% of 12 decks +14% synergy
Steelshaper's Gift
25% of 12 decks +13% synergy
Utility Artifacts
Sword of Feast and Famine
42% of 12 decks +31% synergy
Portal to Phyrexia
36% of 11 decks +35% synergy
Kemba's Banner
36% of 11 decks +30% synergy
The Immortal Sun
33% of 12 decks +33% synergy
Shadowspear
33% of 12 decks +21% synergy
Lightning Greaves
33% of 12 decks +6% synergy
Thaumatic Compass
25% of 12 decks +24% synergy
Blazing Sunsteel
25% of 12 decks +22% synergy
Kaldra Compleat
25% of 12 decks +17% synergy
Idol of Oblivion
25% of 12 decks +15% synergy
Swiftfoot Boots
25% of 12 decks -20% synergy
Enchantments
Smothering Tithe
42% of 12 decks +18% synergy
Authority of the Consuls
33% of 12 decks +32% synergy
Utility Lands
Inventors' Fair
50% of 12 decks +40% synergy
Slayers' Stronghold
50% of 12 decks +21% synergy
Deserted Temple
42% of 12 decks +42% synergy
Maze of Ith
42% of 12 decks +39% synergy
Emeria, the Sky Ruin
42% of 12 decks +39% synergy
Urza's Saga
42% of 12 decks +31% synergy
Axgard Armory
42% of 12 decks +29% synergy
Kor Haven
33% of 12 decks +32% synergy
Strip Mine
33% of 12 decks +31% synergy
Eiganjo, Seat of the Empire
33% of 12 decks +17% synergy
Rogue's Passage
33% of 12 decks +3% synergy
War Room
25% of 12 decks +13% synergy
Mana Artifacts
Sol Ring
100% of 12 decks +13% synergy
Arcane Signet
92% of 12 decks +12% synergy
Talisman of Conviction
42% of 12 decks -11% synergy
Chromatic Orrery
33% of 12 decks +33% synergy
Mox Tantalite
33% of 12 decks +33% synergy
Replicating Ring
33% of 12 decks +33% synergy
Boros Signet
33% of 12 decks -27% synergy
Basalt Monolith
25% of 12 decks +21% synergy
Lands
Command Tower
92% of 12 decks +5% synergy
Elegant Parlor
83% of 6 decks +60% synergy
Boros Garrison
58% of 12 decks +15% synergy
Myriad Landscape
50% of 12 decks +22% synergy
Temple of Triumph
50% of 12 decks +8% synergy
Sacred Foundry
50% of 12 decks +6% synergy
Plateau
42% of 12 decks +29% synergy
Arid Mesa
42% of 12 decks +12% synergy
Furycalm Snarl
42% of 12 decks +2% synergy
Spectator Seating
33% of 12 decks -10% synergy
Thawing Glaciers
25% of 12 decks +25% synergy
Exotic Orchard
25% of 12 decks -2% synergy
Clifftop Retreat
25% of 12 decks -30% synergy