Pentavus + Cauldron of Souls + Clock of Omens + Krark-Clan Ironworks

Pentavus
Cauldron of Souls
Clock of Omens
Krark-Clan Ironworks

Requires
Pentavus must be on the battlefield. Cauldron of Souls must be on the battlefield. Clock of Omens must be on the battlefield. Krark-Clan Ironworks must be on the battlefield. Pentavus does not have a -1/-1 counter on it.
Steps
  1. Activate Cauldron of Souls by tapping it, giving Pentavus persist until end of turn.
  2. Activate Krark-Clan Ironworks by sacrificing Pentavus, adding .
  3. When Pentavus dies, its persist ability triggers, returning it from your graveyard to the battlefield with four +1/+1 counters on it.
  4. Activate Pentavus' first ability twice by paying 2 and removing two +1/+1 counters from it, creating two 1/1 Pentavite artifact creature tokens.
  5. Activate Clock of Omens by tapping Pentavus and a Pentavite, untapping Cauldron of Souls.
  6. Repeat.
  7. Once you have infinite colorless mana and Pentavite tokens, you may use Pentavus' second ability to put infinite +1/+1 counters on it.
Results
Infinite +1/+1 counters on Pentavus. Infinite colorless mana. Infinite creature tokens. Infinite death triggers. Infinite ETB. Infinite LTB. Infinite mana artifacts you control can produce. Infinite sacrifice triggers. Infinite untap of artifacts you control.

Marvin, Murderous Mimic
0.28% of 716 decks 2 decks
Top Commanders
Omarthis, Ghostfire Initiate
0.17% of 1796 decks 3 decks
Karn, Silver Golem
0.19% of 1055 decks 2 decks
Imotekh the Stormlord
0.02% of 6534 decks 1 decks
Kozilek, the Great Distortion
0.02% of 6127 decks 1 decks
Gandalf the White
0.04% of 2571 decks 1 decks
Reaper King
0.02% of 5493 decks 1 decks
Liberator, Urza's Battlethopter
0.03% of 3039 decks 1 decks
High Synergy Cards
Dross Scorpion
100% of 12 decks +100% synergy
Triskelion
92% of 12 decks +91% synergy
Foundry Inspector
83% of 12 decks +79% synergy
Ashnod's Altar
83% of 12 decks +76% synergy
Forsaken Monument
73% of 11 decks +71% synergy
Buried Ruin
75% of 12 decks +70% synergy
Mystic Forge
73% of 11 decks +70% synergy
War Room
73% of 11 decks +66% synergy
Nim Deathmantle
67% of 12 decks +66% synergy
Rings of Brighthearth
67% of 12 decks +65% synergy
Top Cards
Basalt Monolith
75% of 12 decks +72% synergy
Thran Dynamo
75% of 12 decks +70% synergy
All Is Dust
67% of 12 decks +65% synergy
Myr Retriever
67% of 12 decks +65% synergy
Gilded Lotus
67% of 12 decks +63% synergy
Thopter Squadron
58% of 12 decks +58% synergy
Steel Overseer
58% of 12 decks +57% synergy
Scrap Trawler
58% of 12 decks +56% synergy
Myr Battlesphere
58% of 12 decks +56% synergy
Walking Ballista
58% of 12 decks +56% synergy
Creatures
Jhoira's Familiar
55% of 11 decks +53% synergy
Triskelavus
50% of 12 decks +50% synergy
Kuldotha Forgemaster
50% of 12 decks +49% synergy
Solemn Simulacrum
50% of 12 decks +36% synergy
Cryptic Trilobite
45% of 11 decks +45% synergy
Voltaic Construct
42% of 12 decks +41% synergy
Myr Welder
42% of 12 decks +41% synergy
Arcbound Ravager
42% of 12 decks +41% synergy
Metalworker
42% of 12 decks +41% synergy
Junk Diver
42% of 12 decks +41% synergy
Wurmcoil Engine
42% of 12 decks +40% synergy
Liberator, Urza's Battlethopter
40% of 10 decks +38% synergy
Karn, Silver Golem
33% of 12 decks +33% synergy
Arcbound Crusher
33% of 12 decks +33% synergy
Syr Ginger, the Meal Ender
33% of 9 decks +32% synergy
Hangarback Walker
33% of 12 decks +32% synergy
Drillworks Mole
27% of 11 decks +27% synergy
Stonecoil Serpent
27% of 11 decks +26% synergy
Toymaker
25% of 12 decks +25% synergy
Cogwork Assembler
25% of 12 decks +25% synergy
Workhorse
25% of 12 decks +25% synergy
Arcbound Reclaimer
25% of 12 decks +25% synergy
Scarecrone
25% of 12 decks +25% synergy
Endless One
25% of 12 decks +25% synergy
Workshop Assistant
25% of 12 decks +24% synergy
Shimmer Myr
25% of 12 decks +23% synergy
Steel Hellkite
25% of 12 decks +23% synergy
Instants
Scour from Existence
33% of 12 decks +33% synergy
Utility Artifacts
Sensei's Divining Top
58% of 12 decks +53% synergy
Voltaic Key
50% of 12 decks +49% synergy
Staff of Domination
50% of 12 decks +48% synergy
Animation Module
42% of 12 decks +41% synergy
Blasting Station
42% of 12 decks +41% synergy
Cloud Key
42% of 12 decks +40% synergy
Sculpting Steel
42% of 12 decks +39% synergy
Unwinding Clock
42% of 12 decks +39% synergy
Phyrexian Altar
42% of 12 decks +38% synergy
Myr Turbine
33% of 12 decks +33% synergy
Blade of the Bloodchief
33% of 12 decks +33% synergy
Mirrorworks
33% of 12 decks +33% synergy
Mycosynth Lattice
33% of 12 decks +33% synergy
Spine of Ish Sah
33% of 12 decks +32% synergy
Umbral Mantle
33% of 12 decks +32% synergy
Hedron Archive
33% of 12 decks +30% synergy
Skullclamp
33% of 12 decks +21% synergy
Lightning Greaves
33% of 12 decks +8% synergy
Moonsilver Key
27% of 11 decks +26% synergy
Salvaging Station
25% of 12 decks +25% synergy
Prototype Portal
25% of 12 decks +25% synergy
Ugin's Nexus
25% of 12 decks +25% synergy
Planar Bridge
25% of 12 decks +25% synergy
Heartstone
25% of 12 decks +24% synergy
Grinding Station
25% of 12 decks +24% synergy
Semblance Anvil
25% of 12 decks +24% synergy
Helm of Awakening
25% of 12 decks +24% synergy
Trading Post
25% of 12 decks +24% synergy
Nevinyrral's Disk
25% of 12 decks +24% synergy
Darksteel Forge
25% of 12 decks +24% synergy
Expedition Map
25% of 12 decks +22% synergy
Panharmonicon
25% of 12 decks +21% synergy
Enchantments
Ugin's Mastery
33% of 9 decks +33% synergy
Planeswalkers
Karn, the Great Creator
45% of 11 decks +44% synergy
Ugin, the Ineffable
36% of 11 decks +34% synergy
Ugin, the Spirit Dragon
33% of 12 decks +32% synergy
Utility Lands
Urza's Tower
67% of 12 decks +65% synergy
Inventors' Fair
67% of 12 decks +63% synergy
Temple of the False God
67% of 12 decks +57% synergy
Reliquary Tower
67% of 12 decks +37% synergy
Shrine of the Forsaken Gods
58% of 12 decks +57% synergy
Urza's Power Plant
58% of 12 decks +57% synergy
Urza's Mine
58% of 12 decks +57% synergy
Urza's Workshop
50% of 10 decks +49% synergy
Darksteel Citadel
50% of 12 decks +46% synergy
Zhalfirin Void
45% of 11 decks +45% synergy
Urza's Saga
45% of 11 decks +38% synergy
Sanctum of Ugin
42% of 12 decks +41% synergy
Rogue's Passage
42% of 12 decks +22% synergy
Guildless Commons
36% of 11 decks +35% synergy
Karn's Bastion
36% of 11 decks +31% synergy
Tomb of the Spirit Dragon
33% of 12 decks +32% synergy
Arcane Lighthouse
33% of 12 decks +32% synergy
Homeward Path
33% of 12 decks +32% synergy
Ancient Tomb
33% of 12 decks +23% synergy
Drannith Ruins
30% of 10 decks +29% synergy
Tyrite Sanctum
27% of 11 decks +25% synergy
Treasure Vault
27% of 11 decks +25% synergy
Tower of the Magistrate
25% of 12 decks +25% synergy
Glimmerpost
25% of 12 decks +25% synergy
Cloudpost
25% of 12 decks +25% synergy
Urza's Factory
25% of 12 decks +25% synergy
Arch of Orazca
25% of 12 decks +24% synergy
Crystal Vein
25% of 12 decks +24% synergy
Mikokoro, Center of the Sea
25% of 12 decks +23% synergy
Scavenger Grounds
25% of 12 decks +22% synergy
Geier Reach Sanitarium
25% of 12 decks +22% synergy
Mana Artifacts
Sol Ring
100% of 12 decks +16% synergy
Dreamstone Hedron
50% of 12 decks +49% synergy
Everflowing Chalice
50% of 12 decks +45% synergy
Mana Crypt
50% of 12 decks +42% synergy
Mind Stone
50% of 12 decks +33% synergy
Liquimetal Torque
45% of 11 decks +42% synergy
Mana Vault
42% of 12 decks +35% synergy
Thought Vessel
42% of 12 decks +25% synergy
Unstable Obelisk
25% of 12 decks +24% synergy
Grim Monolith
25% of 12 decks +23% synergy
Worn Powerstone
25% of 12 decks +22% synergy
Lands
The Mycosynth Gardens
30% of 10 decks +28% synergy