Othelm, Sigardian Outcast + Myr Battlesphere + Intruder Alarm + Krark-Clan Ironworks

Othelm, Sigardian Outcast
Myr Battlesphere
Intruder Alarm
Krark-Clan Ironworks

Requires
Othelm, Sigardian Outcast must be on the battlefield. Myr Battlesphere must be on the battlefield. Intruder Alarm must be on the battlefield. Krark-Clan Ironworks must be on the battlefield. Othelm does not have summoning sickness.
Steps
  1. Activate Krark-Clan Ironworks by sacrificing Myr Battlesphere, adding cc.
  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 sacrifice triggers. Infinite tap triggers. Infinite untap of all creatures.

Top Commanders (3)
Hargilde, Kindly Runechanter // Othelm, Sigardian Outcast
2.70% of 74 decks 2 decks
Bjorna, Nightfall Alchemist // Othelm, Sigardian Outcast
1.81% of 277 decks 5 decks
Cecily, Haunted Mage // Othelm, Sigardian Outcast
0.45% of 2006 decks 9 decks
High Synergy Cards (10)
Brilliant Ultimatum
100% of 9 decks +100% synergy
Conflux
100% of 9 decks +100% synergy
Angel of Despair
100% of 9 decks +100% synergy
Judith, the Scourge Diva
100% of 9 decks +100% synergy
Phyrexian Scriptures
100% of 9 decks +99% synergy
Decree of Pain
100% of 9 decks +99% synergy
Eerie Ultimatum
100% of 9 decks +99% synergy
Cruel Celebrant
100% of 9 decks +98% synergy
Ruinous Ultimatum
100% of 9 decks +98% synergy
Emergent Ultimatum
89% of 9 decks +89% synergy
Top Cards (10)
Crowded Crypt
100% of 9 decks +99% synergy
Ashnod's Altar
94% of 16 decks +86% synergy
Zulaport Cutthroat
89% of 9 decks +83% synergy
Composite Golem
89% of 9 decks +89% synergy
Diabolic Tutor
78% of 9 decks +74% synergy
Cathodion
75% of 16 decks +75% synergy
Corridor Monitor
75% of 16 decks +75% synergy
Cultivate
75% of 16 decks +53% synergy
Rampant Growth
69% of 16 decks +52% synergy
Commander's Sphere
69% of 16 decks +52% synergy
Creatures (39)
Hissing Iguanar
64% of 14 decks +64% synergy
Village Bell-Ringer
62% of 16 decks +62% synergy
Marchesa's Smuggler
57% of 14 decks +57% synergy
Spiteful Prankster
57% of 14 decks +57% synergy
Sky Hussar
56% of 16 decks +56% synergy
Bounding Krasis
56% of 16 decks +56% synergy
Aeon Chronicler
56% of 16 decks +56% synergy
Great Oak Guardian
56% of 16 decks +56% synergy
Hornet Queen
56% of 16 decks +55% synergy
Transmogrifying Licid
50% of 16 decks +50% synergy
Azure Mage
50% of 16 decks +50% synergy
Faerie Formation
50% of 16 decks +50% synergy
Deep Forest Hermit
50% of 16 decks +50% synergy
Drumbellower
45% of 11 decks +44% synergy
Scrap Welder
44% of 9 decks +44% synergy
Enthusiastic Mechanaut
44% of 9 decks +44% synergy
Solemn Simulacrum
44% of 16 decks +29% synergy
Triplicate Titan
31% of 16 decks +30% synergy
Wurmcoil Engine
31% of 16 decks +29% synergy
Emry, Lurker of the Loch
31% of 16 decks +29% synergy
Junk Diver
25% of 16 decks +24% synergy
Phyrexian Triniform
25% of 16 decks +24% synergy
Oswald Fiddlebender
25% of 16 decks +24% synergy
Scrap Trawler
25% of 16 decks +23% synergy
Etherium Sculptor
25% of 16 decks +22% synergy
Phyrexian Metamorph
25% of 16 decks +22% synergy
Foundry Inspector
25% of 16 decks +21% synergy
Reckless Fireweaver
21% of 14 decks +19% synergy
Treasure Keeper
19% of 16 decks +19% synergy
Filigree Familiar
19% of 16 decks +18% synergy
Lonis, Cryptozoologist
19% of 16 decks +18% synergy
Teshar, Ancestor's Apostle
19% of 16 decks +18% synergy
Sai, Master Thopterist
19% of 16 decks +17% synergy
Myr Retriever
19% of 16 decks +16% synergy
Meteor Golem
19% of 16 decks +16% synergy
Karmic Guide
19% of 16 decks +16% synergy
Seedborn Muse
19% of 16 decks +15% synergy
Burnished Hart
19% of 16 decks +14% synergy
Esper Sentinel
19% of 16 decks +9% synergy
Instants (10)
Rending Vines
50% of 16 decks +50% synergy
Dismantling Blow
50% of 16 decks +50% synergy
Mystic Melting
44% of 16 decks +44% synergy
Aura Blast
44% of 16 decks +44% synergy
Keep Watch
44% of 16 decks +43% synergy
Crop Rotation
44% of 16 decks +39% synergy
Overwhelming Intellect
38% of 16 decks +37% synergy
Path to Exile
31% of 16 decks +12% synergy
Counterspell
25% of 16 decks +4% synergy
Teferi's Protection
19% of 16 decks +9% synergy
Sorceries (12)
Inspired Ultimatum
57% of 14 decks +57% synergy
Dire-Strain Rampage
57% of 14 decks +57% synergy
Cleansing Wildfire
57% of 14 decks +57% synergy
Migration Path
56% of 16 decks +54% synergy
Beck // Call
50% of 16 decks +50% synergy
Path to the Festival
50% of 16 decks +50% synergy
Overflowing Insight
50% of 16 decks +50% synergy
Creeping Renaissance
50% of 16 decks +50% synergy
Rush of Knowledge
44% of 16 decks +44% synergy
Tranquil Path
31% of 16 decks +31% synergy
Wake the Past
21% of 14 decks +21% synergy
Neoform
19% of 16 decks +18% synergy
Utility Artifacts (8)
Thornbite Staff
62% of 16 decks +62% synergy
Clock of Omens
56% of 16 decks +55% synergy
Ashnod's Transmogrant
50% of 16 decks +50% synergy
Thran Forge
38% of 16 decks +37% synergy
Birthing Pod
25% of 16 decks +24% synergy
Thousand-Year Elixir
25% of 16 decks +22% synergy
Trading Post
19% of 16 decks +17% synergy
Lightning Greaves
19% of 16 decks -7% synergy
Enchantments (4)
Rhystic Study
31% of 16 decks +17% synergy
Ulvenwald Mysteries
19% of 16 decks +18% synergy
Aura Shards
19% of 16 decks +17% synergy
Smothering Tithe
19% of 16 decks +7% synergy
Utility Lands (9)
Reliquary Tower
62% of 16 decks +34% synergy
Emergence Zone
56% of 16 decks +54% synergy
Buried Ruin
56% of 16 decks +51% synergy
Labyrinth of Skophos
50% of 16 decks +49% synergy
Cascading Cataracts
50% of 16 decks +49% synergy
Maze of Ith
50% of 16 decks +47% synergy
Boseiju, Who Endures
27% of 11 decks +18% synergy
Inventors' Fair
25% of 16 decks +21% synergy
Academy Ruins
19% of 16 decks +16% synergy
Mana Artifacts (7)
Arcane Signet
81% of 16 decks +11% synergy
Gemstone Array
56% of 16 decks +56% synergy
Darksteel Ingot
56% of 16 decks +55% synergy
Thought Vessel
56% of 16 decks +41% synergy
Sol Ring
44% of 16 decks -41% synergy
Prismatic Lens
38% of 16 decks +36% synergy
Chromatic Lantern
19% of 16 decks +9% synergy
Lands (10)
Command Tower
94% of 16 decks +21% synergy
Thriving Moor
89% of 9 decks +88% synergy
Exotic Orchard
75% of 16 decks +40% synergy
Thriving Grove
50% of 16 decks +49% synergy
Thriving Bluff
50% of 14 decks +49% synergy
Thriving Isle
50% of 16 decks +49% synergy
Thriving Heath
44% of 16 decks +42% synergy
Spara's Headquarters
27% of 11 decks +23% synergy
Hallowed Fountain
19% of 16 decks +9% synergy
Flooded Strand
19% of 16 decks +9% synergy