Othelm, Sigardian Outcast + Myr Battlesphere + Intruder Alarm + Ashnod's Altar

Othelm, Sigardian Outcast
Myr Battlesphere
Intruder Alarm
Ashnod's Altar

Requires
Othelm, Sigardian Outcast must be on the battlefield. Myr Battlesphere must be on the battlefield. Intruder Alarm must be on the battlefield. Ashnod's Altar must be on the battlefield. Othelm does not have summoning sickness.
Steps
  1. Activate Ashnod's Altar by sacrificing Myr Battlesphere, adding .
  2. Activate Othelm by paying 2 and tapping it, returning Myr Battlesphere from your graveyard to the battlefield tapped.
  3. Myr Battlesphere enters the battlefield, triggering itself and Intruder Alarm.
  4. Resolve the Intruder Alarm trigger, untapping all creatures.
  5. Resolve the Myr Battlesphere trigger, creating four 1/1 Myr artifact creature tokens.
  6. The Myr tokens enter the battlefield, triggering Intruder Alarm four times, untapping all creatures.
  7. Repeat.
Results
Infinite colorless mana. Infinite creature tokens. Infinite death triggers. Infinite ETB. Infinite LTB. Infinite mana creatures you control can produce. Infinite sacrifice triggers. Infinite tap triggers. Infinite untap of all creatures.

Bjorna, Nightfall Alchemist // Othelm, Sigardian Outcast
5.88% of 272 decks 16 decks
Cecily, Haunted Mage // Othelm, Sigardian Outcast
0.63% of 1905 decks 12 decks
Hargilde, Kindly Runechanter // Othelm, Sigardian Outcast
1.61% of 62 decks 1 decks
High Synergy Cards
Cathodion
83% of 29 decks +83% synergy
Decree of Pain
83% of 12 decks +81% synergy
Corridor Monitor
76% of 29 decks +75% synergy
Composite Golem
75% of 12 decks +74% synergy
Angel of Despair
75% of 12 decks +73% synergy
Zulaport Cutthroat
83% of 12 decks +73% synergy
Judith, the Scourge Diva
75% of 12 decks +73% synergy
Conflux
75% of 12 decks +71% synergy
Cruel Celebrant
75% of 12 decks +67% synergy
Brilliant Ultimatum
67% of 12 decks +66% synergy
Top Cards
Eerie Ultimatum
75% of 12 decks +63% synergy
Ruinous Ultimatum
75% of 12 decks +57% synergy
Phyrexian Scriptures
67% of 12 decks +65% synergy
Crowded Crypt
67% of 12 decks +65% synergy
Solemn Simulacrum
62% of 29 decks +48% synergy
Emergent Ultimatum
58% of 12 decks +56% synergy
Diabolic Tutor
58% of 12 decks +52% synergy
Commander's Sphere
55% of 29 decks +40% synergy
Ioreth of the Healing House
54% of 13 decks +52% synergy
Enthusiastic Mechanaut
52% of 23 decks +48% synergy
Creatures
Haywire Mite
50% of 18 decks +46% synergy
Scrap Trawler
48% of 29 decks +46% synergy
Myr Retriever
48% of 29 decks +46% synergy
Meteor Golem
48% of 29 decks +46% synergy
Unctus, Grand Metatect
47% of 15 decks +45% synergy
Combustible Gearhulk
46% of 28 decks +44% synergy
Circuit Mender
46% of 24 decks +45% synergy
Syr Ginger, the Meal Ender
45% of 11 decks +45% synergy
Filigree Familiar
45% of 29 decks +45% synergy
Emry, Lurker of the Loch
45% of 29 decks +41% synergy
Foundry Inspector
45% of 29 decks +41% synergy
Etherium Sculptor
45% of 29 decks +39% synergy
Drumbellower
42% of 24 decks +39% synergy
Thought Monitor
41% of 29 decks +38% synergy
Breya's Apprentice
39% of 28 decks +39% synergy
Village Bell-Ringer
38% of 29 decks +37% synergy
Oswald Fiddlebender
38% of 29 decks +36% synergy
Wurmcoil Engine
38% of 29 decks +36% synergy
Angel of the Ruins
38% of 29 decks +35% synergy
Hornet Queen
38% of 29 decks +35% synergy
Hissing Iguanar
36% of 28 decks +35% synergy
Great Oak Guardian
34% of 29 decks +34% synergy
Deep Forest Hermit
34% of 29 decks +33% synergy
Teshar, Ancestor's Apostle
34% of 29 decks +32% synergy
Ornithopter of Paradise
34% of 29 decks +30% synergy
Marchesa's Smuggler
32% of 28 decks +32% synergy
Spiteful Prankster
32% of 28 decks +32% synergy
Azure Mage
31% of 29 decks +31% synergy
Bounding Krasis
31% of 29 decks +31% synergy
Junk Diver
31% of 29 decks +30% synergy
Lonis, Cryptozoologist
31% of 29 decks +29% synergy
Goblin Engineer
29% of 28 decks +25% synergy
Reckless Fireweaver
29% of 28 decks +24% synergy
Transmogrifying Licid
28% of 29 decks +28% synergy
Sky Hussar
28% of 29 decks +27% synergy
Aeon Chronicler
28% of 29 decks +27% synergy
Workshop Assistant
28% of 29 decks +27% synergy
Faerie Formation
28% of 29 decks +27% synergy
Sai, Master Thopterist
28% of 29 decks +24% synergy
Phyrexian Metamorph
28% of 29 decks +21% synergy
Threefold Thunderhulk
27% of 11 decks +26% synergy
Agatha of the Vile Cauldron
27% of 11 decks +26% synergy
Blood Artist
25% of 12 decks +13% synergy
Triplicate Titan
24% of 29 decks +23% synergy
Phyrexian Triniform
24% of 29 decks +23% synergy
Scrap Welder
22% of 23 decks +21% synergy
Birds of Paradise
21% of 29 decks -6% synergy
Goblin Welder
18% of 28 decks +15% synergy
Losheel, Clockwork Scholar
17% of 29 decks +14% synergy
Burnished Hart
17% of 29 decks +13% synergy
Instants
Counterspell
48% of 29 decks +5% synergy
Path to Exile
41% of 29 decks -4% synergy
Dispatch
31% of 29 decks +26% synergy
Swords to Plowshares
31% of 29 decks -32% synergy
Mystic Melting
28% of 29 decks +28% synergy
Rending Vines
28% of 29 decks +28% synergy
Overwhelming Intellect
28% of 29 decks +28% synergy
Aura Blast
28% of 29 decks +27% synergy
Generous Gift
28% of 29 decks +2% synergy
Dismantling Blow
24% of 29 decks +24% synergy
Keep Watch
24% of 29 decks +23% synergy
Crop Rotation
24% of 29 decks +14% synergy
Beast Within
21% of 29 decks -18% synergy
An Offer You Can't Refuse
17% of 23 decks -4% synergy
Chaos Warp
11% of 28 decks -21% synergy
Dovin's Veto
10% of 29 decks -9% synergy
Teferi's Protection
10% of 29 decks -10% synergy
Cyclonic Rift
10% of 29 decks -17% synergy
Sorceries
Cultivate
48% of 29 decks +2% synergy
Rampant Growth
41% of 29 decks +7% synergy
Wake the Past
36% of 28 decks +33% synergy
Inspired Ultimatum
32% of 28 decks +31% synergy
Overflowing Insight
31% of 29 decks +31% synergy
Beck // Call
31% of 29 decks +31% synergy
Rush of Knowledge
31% of 29 decks +31% synergy
Cleansing Wildfire
29% of 28 decks +28% synergy
Dire-Strain Rampage
25% of 28 decks +24% synergy
Organic Extinction
25% of 24 decks +22% synergy
Blasphemous Act
25% of 28 decks -9% synergy
Creeping Renaissance
24% of 29 decks +23% synergy
Migration Path
24% of 29 decks +21% synergy
Farseek
24% of 29 decks -10% synergy
Path to the Festival
21% of 29 decks +21% synergy
Tranquil Path
17% of 29 decks +17% synergy
Thoughtcast
14% of 29 decks +10% synergy
Kodama's Reach
14% of 29 decks -18% synergy
Dance of the Manse
10% of 29 decks +6% synergy
Idyllic Tutor
10% of 29 decks +5% synergy
Neoform
10% of 29 decks +5% synergy
Three Visits
10% of 29 decks -14% synergy
Nature's Lore
10% of 29 decks -22% synergy
Utility Artifacts
Krark-Clan Ironworks
48% of 29 decks +47% synergy
Thopter Shop
44% of 18 decks +44% synergy
Encroaching Mycosynth
40% of 15 decks +39% synergy
Thornbite Staff
38% of 29 decks +37% synergy
Thousand-Year Elixir
38% of 29 decks +36% synergy
Lux Artillery
36% of 14 decks +35% synergy
Ashnod's Transmogrant
28% of 29 decks +27% synergy
Clock of Omens
28% of 29 decks +27% synergy
Swiftfoot Boots
28% of 29 decks -0% synergy
Trading Post
24% of 29 decks +23% synergy
Thran Forge
21% of 29 decks +21% synergy
Ichor Wellspring
21% of 29 decks +19% synergy
Mycosynth Wellspring
17% of 29 decks +16% synergy
Birthing Pod
17% of 29 decks +15% synergy
Basilisk Collar
17% of 29 decks +14% synergy
Panharmonicon
14% of 29 decks +10% synergy
Lightning Greaves
14% of 29 decks -12% synergy
Enchantments
Goblin Bombardment
21% of 28 decks +15% synergy
Thopter Spy Network
21% of 29 decks +17% synergy
Impact Tremors
18% of 28 decks +8% synergy
Rhystic Study
17% of 29 decks -10% synergy
Mirrodin Besieged
14% of 29 decks +12% synergy
Smothering Tithe
14% of 29 decks -11% synergy
Ulvenwald Mysteries
10% of 29 decks +10% synergy
Planeswalkers
Daretti, Scrap Savant
36% of 28 decks +33% synergy
Utility Lands
Buried Ruin
38% of 29 decks +33% synergy
Tree of Tales
31% of 29 decks +29% synergy
Inventors' Fair
31% of 29 decks +27% synergy
Ancient Den
31% of 29 decks +26% synergy
Seat of the Synod
31% of 29 decks +25% synergy
Reliquary Tower
31% of 29 decks +1% synergy
Great Furnace
29% of 28 decks +23% synergy
Emergence Zone
24% of 29 decks +22% synergy
Academy Ruins
24% of 29 decks +19% synergy
Maze of Ith
21% of 29 decks +18% synergy
Darksteel Citadel
21% of 29 decks +17% synergy
Labyrinth of Skophos
17% of 29 decks +17% synergy
Cascading Cataracts
17% of 29 decks +16% synergy
Boseiju, Who Endures
12% of 24 decks -7% synergy
Mana Artifacts
Arcane Signet
79% of 29 decks +7% synergy
Sol Ring
69% of 29 decks -15% synergy
Chromatic Lantern
34% of 29 decks +25% synergy
Thought Vessel
34% of 29 decks +18% synergy
Gemstone Array
31% of 29 decks +31% synergy
Liquimetal Torque
31% of 29 decks +27% synergy
Darksteel Ingot
28% of 29 decks +26% synergy
Fellwar Stone
28% of 29 decks +7% synergy
Slagstone Refinery
22% of 18 decks +22% synergy
Prismatic Lens
17% of 29 decks +16% synergy
Mana Crypt
14% of 29 decks +5% synergy
Mox Amber
10% of 29 decks +6% synergy
Mana Vault
10% of 29 decks +4% synergy
Lands
Command Tower
83% of 29 decks +9% synergy
Exotic Orchard
72% of 29 decks +37% synergy
Thriving Moor
58% of 12 decks +56% synergy
Slagwoods Bridge
32% of 28 decks +30% synergy
Razortide Bridge
31% of 29 decks +24% synergy
Tanglepool Bridge
28% of 29 decks +25% synergy
Spire of Industry
28% of 29 decks +25% synergy
Jetmir's Garden
27% of 22 decks -6% synergy
Thriving Bluff
25% of 28 decks +23% synergy
Rustvale Bridge
25% of 28 decks +20% synergy
Silverbluff Bridge
25% of 28 decks +19% synergy
Mystic Monastery
25% of 28 decks -1% synergy
Jungle Shrine
25% of 28 decks -7% synergy
Thornglint Bridge
24% of 29 decks +22% synergy
Thriving Grove
24% of 29 decks +22% synergy
Thriving Heath
24% of 29 decks +21% synergy
Seaside Citadel
24% of 29 decks -2% synergy
Hallowed Fountain
24% of 29 decks -17% synergy
Breeding Pool
24% of 29 decks -17% synergy
Spara's Headquarters
22% of 23 decks -10% synergy
Raugrin Triome
21% of 28 decks -5% synergy
Frontier Bivouac
21% of 28 decks -6% synergy
Steam Vents
21% of 28 decks -18% synergy
Stomping Ground
21% of 28 decks -20% synergy
Thriving Isle
21% of 29 decks +18% synergy
Sea of Clouds
21% of 29 decks -5% synergy
The Mycosynth Gardens
20% of 15 decks +18% synergy
Spectator Seating
18% of 28 decks -7% synergy
Ketria Triome
18% of 28 decks -15% synergy
Flooded Strand
17% of 29 decks +7% synergy
Arid Mesa
17% of 29 decks +7% synergy
Scalding Tarn
17% of 29 decks +6% synergy
Verdant Catacombs
17% of 29 decks +6% synergy
Misty Rainforest
17% of 29 decks +6% synergy
Bountiful Promenade
17% of 29 decks -7% synergy
Plateau
14% of 28 decks +2% synergy
Taiga
14% of 28 decks +1% synergy
Volcanic Island
14% of 28 decks +0% synergy
Training Center
14% of 28 decks -13% synergy
Marsh Flats
14% of 29 decks +3% synergy
Polluted Delta
14% of 29 decks +3% synergy
Yavimaya Coast
14% of 29 decks -13% synergy
Rejuvenating Springs
14% of 29 decks -15% synergy
Temple Garden
14% of 29 decks -27% synergy
Shivan Reef
11% of 28 decks -16% synergy
Sacred Foundry
11% of 28 decks -25% synergy
Cinder Glade
11% of 28 decks -28% synergy
City of Brass
10% of 29 decks +2% synergy
Wooded Foothills
10% of 29 decks +0% synergy
Bloodstained Mire
10% of 29 decks -0% synergy