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
6.18% of 275 decks 17 decks
Cecily, Haunted Mage // Othelm, Sigardian Outcast
0.69% of 1894 decks 13 decks
Hargilde, Kindly Runechanter // Othelm, Sigardian Outcast
1.54% of 65 decks 1 decks
High Synergy Cards
Decree of Pain
85% of 13 decks +82% synergy
Cathodion
81% of 31 decks +80% synergy
Corridor Monitor
71% of 31 decks +71% synergy
Composite Golem
69% of 13 decks +69% synergy
Angel of Despair
69% of 13 decks +68% synergy
Judith, the Scourge Diva
69% of 13 decks +68% synergy
Zulaport Cutthroat
77% of 13 decks +67% synergy
Conflux
69% of 13 decks +65% synergy
Cruel Celebrant
69% of 13 decks +61% synergy
Brilliant Ultimatum
62% of 13 decks +61% synergy
Top Cards
Ruinous Ultimatum
77% of 13 decks +59% synergy
Eerie Ultimatum
69% of 13 decks +57% synergy
Phyrexian Scriptures
62% of 13 decks +60% synergy
Crowded Crypt
62% of 13 decks +60% synergy
Solemn Simulacrum
58% of 31 decks +44% synergy
Commander's Sphere
58% of 31 decks +43% synergy
Ioreth of the Healing House
54% of 13 decks +52% synergy
Emergent Ultimatum
54% of 13 decks +51% synergy
Diabolic Tutor
54% of 13 decks +47% synergy
Haywire Mite
53% of 19 decks +49% synergy
Creatures
Enthusiastic Mechanaut
48% of 25 decks +44% synergy
Unctus, Grand Metatect
47% of 15 decks +45% synergy
Syr Ginger, the Meal Ender
45% of 11 decks +45% synergy
Scrap Trawler
45% of 31 decks +43% synergy
Myr Retriever
45% of 31 decks +43% synergy
Meteor Golem
45% of 31 decks +43% synergy
Combustible Gearhulk
43% of 30 decks +41% synergy
Circuit Mender
42% of 26 decks +41% synergy
Filigree Familiar
42% of 31 decks +42% synergy
Emry, Lurker of the Loch
42% of 31 decks +38% synergy
Foundry Inspector
42% of 31 decks +38% synergy
Etherium Sculptor
42% of 31 decks +36% synergy
Thought Monitor
39% of 31 decks +36% synergy
Drumbellower
38% of 26 decks +36% synergy
Breya's Apprentice
37% of 30 decks +36% synergy
Village Bell-Ringer
35% of 31 decks +34% synergy
Oswald Fiddlebender
35% of 31 decks +34% synergy
Wurmcoil Engine
35% of 31 decks +34% synergy
Angel of the Ruins
35% of 31 decks +33% synergy
Hornet Queen
35% of 31 decks +33% synergy
Hissing Iguanar
33% of 30 decks +33% synergy
Great Oak Guardian
32% of 31 decks +32% synergy
Deep Forest Hermit
32% of 31 decks +31% synergy
Lonis, Cryptozoologist
32% of 31 decks +31% synergy
Teshar, Ancestor's Apostle
32% of 31 decks +30% synergy
Ornithopter of Paradise
32% of 31 decks +28% synergy
Marchesa's Smuggler
30% of 30 decks +30% synergy
Spiteful Prankster
30% of 30 decks +30% synergy
Azure Mage
29% of 31 decks +29% synergy
Bounding Krasis
29% of 31 decks +29% synergy
Junk Diver
29% of 31 decks +28% synergy
Threefold Thunderhulk
27% of 11 decks +26% synergy
Agatha of the Vile Cauldron
27% of 11 decks +26% synergy
Goblin Engineer
27% of 30 decks +23% synergy
Reckless Fireweaver
27% of 30 decks +22% synergy
Transmogrifying Licid
26% of 31 decks +26% synergy
Sky Hussar
26% of 31 decks +26% synergy
Aeon Chronicler
26% of 31 decks +25% synergy
Workshop Assistant
26% of 31 decks +25% synergy
Faerie Formation
26% of 31 decks +25% synergy
Sai, Master Thopterist
26% of 31 decks +22% synergy
Phyrexian Metamorph
26% of 31 decks +19% synergy
Blood Artist
23% of 13 decks +11% synergy
Triplicate Titan
23% of 31 decks +22% synergy
Phyrexian Triniform
23% of 31 decks +22% synergy
Scrap Welder
20% of 25 decks +20% synergy
Burnished Hart
19% of 31 decks +15% synergy
Birds of Paradise
19% of 31 decks -8% synergy
Goblin Welder
17% of 30 decks +14% synergy
Losheel, Clockwork Scholar
16% of 31 decks +13% synergy
Instants
Counterspell
45% of 31 decks +2% synergy
Path to Exile
39% of 31 decks -7% synergy
Dispatch
29% of 31 decks +24% synergy
Swords to Plowshares
29% of 31 decks -34% synergy
Mystic Melting
26% of 31 decks +26% synergy
Rending Vines
26% of 31 decks +26% synergy
Overwhelming Intellect
26% of 31 decks +26% synergy
Aura Blast
26% of 31 decks +26% synergy
Generous Gift
26% of 31 decks +0% synergy
Dismantling Blow
23% of 31 decks +22% synergy
Keep Watch
23% of 31 decks +22% synergy
Crop Rotation
23% of 31 decks +13% synergy
Beast Within
19% of 31 decks -20% synergy
An Offer You Can't Refuse
16% of 25 decks -5% synergy
Chaos Warp
10% of 30 decks -22% synergy
Dovin's Veto
10% of 31 decks -10% synergy
Teferi's Protection
10% of 31 decks -10% synergy
Cyclonic Rift
10% of 31 decks -18% synergy
Sorceries
Cultivate
48% of 31 decks +2% synergy
Rampant Growth
39% of 31 decks +4% synergy
Wake the Past
33% of 30 decks +30% synergy
Inspired Ultimatum
30% of 30 decks +29% synergy
Overflowing Insight
29% of 31 decks +29% synergy
Beck // Call
29% of 31 decks +29% synergy
Rush of Knowledge
29% of 31 decks +29% synergy
Cleansing Wildfire
27% of 30 decks +26% synergy
Dire-Strain Rampage
23% of 30 decks +22% synergy
Blasphemous Act
23% of 30 decks -10% synergy
Organic Extinction
23% of 26 decks +20% synergy
Path to the Festival
23% of 31 decks +22% synergy
Creeping Renaissance
23% of 31 decks +22% synergy
Migration Path
23% of 31 decks +19% synergy
Farseek
23% of 31 decks -12% synergy
Tranquil Path
16% of 31 decks +16% synergy
Thoughtcast
13% of 31 decks +10% synergy
Kodama's Reach
13% of 31 decks -19% synergy
Dance of the Manse
10% of 31 decks +5% synergy
Idyllic Tutor
10% of 31 decks +5% synergy
Neoform
10% of 31 decks +4% synergy
Three Visits
10% of 31 decks -15% synergy
Nature's Lore
10% of 31 decks -22% synergy
Utility Artifacts
Krark-Clan Ironworks
45% of 31 decks +44% synergy
Thopter Shop
42% of 19 decks +41% synergy
Encroaching Mycosynth
40% of 15 decks +39% synergy
Thornbite Staff
39% of 31 decks +38% synergy
Lux Artillery
36% of 14 decks +35% synergy
Thousand-Year Elixir
35% of 31 decks +33% synergy
Ashnod's Transmogrant
26% of 31 decks +26% synergy
Clock of Omens
26% of 31 decks +25% synergy
Swiftfoot Boots
26% of 31 decks -2% synergy
Trading Post
23% of 31 decks +21% synergy
Thran Forge
19% of 31 decks +19% synergy
Ichor Wellspring
19% of 31 decks +18% synergy
Mycosynth Wellspring
16% of 31 decks +15% synergy
Birthing Pod
16% of 31 decks +14% synergy
Basilisk Collar
16% of 31 decks +13% synergy
Panharmonicon
13% of 31 decks +9% synergy
Lightning Greaves
13% of 31 decks -13% synergy
Phyrexian Altar
10% of 31 decks +6% synergy
Enchantments
Goblin Bombardment
20% of 30 decks +14% synergy
Impact Tremors
20% of 30 decks +11% synergy
Thopter Spy Network
19% of 31 decks +16% synergy
Rhystic Study
16% of 31 decks -12% synergy
Mirrodin Besieged
13% of 31 decks +11% synergy
Smothering Tithe
13% of 31 decks -12% synergy
Ulvenwald Mysteries
10% of 31 decks +9% synergy
Planeswalkers
Daretti, Scrap Savant
33% of 30 decks +31% synergy
Utility Lands
Buried Ruin
35% of 31 decks +30% synergy
Tree of Tales
29% of 31 decks +27% synergy
Inventors' Fair
29% of 31 decks +25% synergy
Ancient Den
29% of 31 decks +24% synergy
Seat of the Synod
29% of 31 decks +23% synergy
Reliquary Tower
29% of 31 decks -0% synergy
Great Furnace
27% of 30 decks +21% synergy
Emergence Zone
23% of 31 decks +20% synergy
Academy Ruins
23% of 31 decks +18% synergy
Maze of Ith
19% of 31 decks +17% synergy
Darksteel Citadel
19% of 31 decks +15% synergy
Labyrinth of Skophos
16% of 31 decks +16% synergy
Cascading Cataracts
16% of 31 decks +15% synergy
Boseiju, Who Endures
12% of 26 decks -8% synergy
Mana Artifacts
Arcane Signet
77% of 31 decks +5% synergy
Sol Ring
68% of 31 decks -17% synergy
Chromatic Lantern
35% of 31 decks +26% synergy
Thought Vessel
35% of 31 decks +19% synergy
Gemstone Array
29% of 31 decks +29% synergy
Liquimetal Torque
29% of 31 decks +25% synergy
Fellwar Stone
29% of 31 decks +8% synergy
Darksteel Ingot
26% of 31 decks +25% synergy
Slagstone Refinery
21% of 19 decks +21% synergy
Prismatic Lens
16% of 31 decks +15% synergy
Mana Crypt
13% of 31 decks +4% synergy
Mox Amber
10% of 31 decks +6% synergy
Mana Vault
10% of 31 decks +3% synergy
Mind Stone
10% of 31 decks -8% synergy
Lands
Command Tower
81% of 31 decks +7% synergy
Exotic Orchard
68% of 31 decks +32% synergy
Thriving Moor
54% of 13 decks +51% synergy
Slagwoods Bridge
30% of 30 decks +27% synergy
Razortide Bridge
29% of 31 decks +22% synergy
Tanglepool Bridge
26% of 31 decks +23% synergy
Spire of Industry
26% of 31 decks +23% synergy
Jetmir's Garden
25% of 24 decks -8% synergy
Thriving Bluff
23% of 30 decks +21% synergy
Rustvale Bridge
23% of 30 decks +18% synergy
Silverbluff Bridge
23% of 30 decks +17% synergy
Mystic Monastery
23% of 30 decks -3% synergy
Jungle Shrine
23% of 30 decks -9% synergy
Thornglint Bridge
23% of 31 decks +20% synergy
Thriving Grove
23% of 31 decks +20% synergy
Thriving Heath
23% of 31 decks +20% synergy
Seaside Citadel
23% of 31 decks -3% synergy
Hallowed Fountain
23% of 31 decks -18% synergy
Breeding Pool
23% of 31 decks -19% synergy
The Mycosynth Gardens
20% of 15 decks +18% synergy
Raugrin Triome
20% of 30 decks -7% synergy
Frontier Bivouac
20% of 30 decks -7% synergy
Spara's Headquarters
20% of 25 decks -12% synergy
Steam Vents
20% of 30 decks -19% synergy
Stomping Ground
20% of 30 decks -21% synergy
Thriving Isle
19% of 31 decks +17% synergy
Sea of Clouds
19% of 31 decks -7% synergy
Spectator Seating
17% of 30 decks -9% synergy
Ketria Triome
17% of 30 decks -16% synergy
Flooded Strand
16% of 31 decks +6% synergy
Arid Mesa
16% of 31 decks +5% synergy
Scalding Tarn
16% of 31 decks +5% synergy
Verdant Catacombs
16% of 31 decks +5% synergy
Misty Rainforest
16% of 31 decks +4% synergy
Bountiful Promenade
16% of 31 decks -8% synergy
Yavimaya Coast
16% of 31 decks -10% synergy
Plateau
13% of 30 decks +1% synergy
Taiga
13% of 30 decks +0% synergy
Volcanic Island
13% of 30 decks -0% synergy
Training Center
13% of 30 decks -14% synergy
Polluted Delta
13% of 31 decks +2% synergy
Marsh Flats
13% of 31 decks +2% synergy
Evolving Wilds
13% of 31 decks -8% synergy
Rejuvenating Springs
13% of 31 decks -16% synergy
Temple Garden
13% of 31 decks -28% synergy
Temple of Abandon
10% of 30 decks -4% synergy
Temple of Triumph
10% of 30 decks -7% synergy
Shivan Reef
10% of 30 decks -17% synergy
Sacred Foundry
10% of 30 decks -26% synergy
Cinder Glade
10% of 30 decks -28% synergy