Pentavus + Cauldron of Souls + Clock of Omens + Ashnod's Altar

Pentavus
Cauldron of Souls
Clock of Omens
Ashnod's Altar

Requires
Pentavus must be on the battlefield. Cauldron of Souls must be on the battlefield. Clock of Omens must be on the battlefield. Ashnod's Altar 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 Ashnod's Altar 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 708 decks 2 decks
Top Commanders
Omarthis, Ghostfire Initiate
0.34% of 1788 decks 6 decks
Liberator, Urza's Battlethopter
0.07% of 3044 decks 2 decks
Ultra Magnus, Tactician
0.07% of 1407 decks 1 decks
Judith, the Scourge Diva
0.12% of 858 decks 1 decks
Gandalf the White
0.04% of 2557 decks 1 decks
Breya, Etherium Shaper
0.01% of 13908 decks 1 decks
Karn, Silver Golem
0.09% of 1054 decks 1 decks
Kozilek, the Great Distortion
0.02% of 6128 decks 1 decks
Imotekh the Stormlord
0.02% of 6524 decks 1 decks
Reaper King
0.02% of 5486 decks 1 decks
Muzzio, Visionary Architect
0.19% of 525 decks 1 decks
Daretti, Scrap Savant
0.04% of 2831 decks 1 decks
Gev, Scaled Scorch
0.02% of 4662 decks 1 decks
High Synergy Cards
Dross Scorpion
86% of 21 decks +86% synergy
Triskelion
86% of 21 decks +85% synergy
Inventors' Fair
71% of 21 decks +68% synergy
Buried Ruin
71% of 21 decks +66% synergy
Steel Overseer
67% of 21 decks +65% synergy
Foundry Inspector
62% of 21 decks +58% synergy
Rings of Brighthearth
57% of 21 decks +55% synergy
Unwinding Clock
57% of 21 decks +54% synergy
Forsaken Monument
56% of 18 decks +54% synergy
Mystic Forge
55% of 20 decks +52% synergy
Top Cards
Thran Dynamo
71% of 21 decks +67% synergy
Basalt Monolith
67% of 21 decks +64% synergy
Liberator, Urza's Battlethopter
53% of 17 decks +51% synergy
Kuldotha Forgemaster
52% of 21 decks +52% synergy
Myr Battlesphere
52% of 21 decks +50% synergy
Walking Ballista
52% of 21 decks +50% synergy
Solemn Simulacrum
52% of 21 decks +38% synergy
Thopter Squadron
48% of 21 decks +48% synergy
Hangarback Walker
48% of 21 decks +47% synergy
Krark-Clan Ironworks
48% of 21 decks +47% synergy
Creatures
Esper Sentinel
75% of 4 decks +54% synergy
Mikaeus, the Unhallowed
60% of 5 decks +57% synergy
Triskelavus
43% of 21 decks +43% synergy
Arcbound Ravager
43% of 21 decks +42% synergy
Myr Retriever
43% of 21 decks +41% synergy
Hexavus
41% of 17 decks +41% synergy
Jhoira's Familiar
40% of 20 decks +38% synergy
Scrap Trawler
38% of 21 decks +36% synergy
Syr Ginger, the Meal Ender
36% of 14 decks +35% synergy
Cryptic Trilobite
35% of 20 decks +35% synergy
Drillworks Mole
33% of 18 decks +33% synergy
Arcbound Crusher
33% of 21 decks +33% synergy
Arcbound Reclaimer
29% of 21 decks +28% synergy
Junk Diver
29% of 21 decks +28% synergy
Shimmer Myr
29% of 21 decks +27% synergy
Palladium Myr
29% of 21 decks +26% synergy
Patchwork Automaton
28% of 18 decks +28% synergy
Threefold Thunderhulk
27% of 11 decks +26% synergy
Stonecoil Serpent
25% of 20 decks +24% synergy
Workhorse
24% of 21 decks +24% synergy
Voltaic Construct
24% of 21 decks +24% synergy
Metalworker
24% of 21 decks +23% synergy
Wurmcoil Engine
24% of 21 decks +22% synergy
Steel Hellkite
24% of 21 decks +22% synergy
Monoskelion
22% of 18 decks +22% synergy
Abstruse Archaic
21% of 14 decks +21% synergy
Skittering Cicada
21% of 14 decks +21% synergy
Scrapyard Recombiner
20% of 20 decks +20% synergy
Karn, Legacy Reforged
20% of 15 decks +19% synergy
Meteor Golem
20% of 20 decks +18% synergy
Karn, Silver Golem
19% of 21 decks +19% synergy
Cathodion
19% of 21 decks +19% synergy
Scarecrone
19% of 21 decks +19% synergy
Myr Welder
19% of 21 decks +19% synergy
Mindless Automaton
19% of 21 decks +19% synergy
Endless One
19% of 21 decks +19% synergy
Duplicant
19% of 21 decks +18% synergy
Towashi Guide-Bot
17% of 18 decks +16% synergy
Iron Apprentice
17% of 18 decks +16% synergy
Phyrexian Triniform
17% of 18 decks +16% synergy
Wandering Archaic
17% of 18 decks +15% synergy
Farmstead Gleaner
15% of 20 decks +15% synergy
Ugin's Conjurant
15% of 20 decks +15% synergy
Cogwork Assembler
14% of 21 decks +14% synergy
Battered Golem
14% of 21 decks +14% synergy
Arcbound Worker
14% of 21 decks +14% synergy
Pili-Pala
14% of 21 decks +14% synergy
Mycosynth Golem
14% of 21 decks +14% synergy
Workshop Assistant
14% of 21 decks +14% synergy
Metalwork Colossus
14% of 21 decks +13% synergy
Instants
Scour from Existence
14% of 21 decks +14% synergy
Sorceries
All Is Dust
48% of 21 decks +46% synergy
Expanded Anatomy
17% of 18 decks +17% synergy
Utility Artifacts
Myr Turbine
43% of 21 decks +43% synergy
Animation Module
38% of 21 decks +38% synergy
Blasting Station
38% of 21 decks +38% synergy
Nim Deathmantle
38% of 21 decks +37% synergy
Voltaic Key
38% of 21 decks +37% synergy
Sculpting Steel
38% of 21 decks +36% synergy
Blade of the Bloodchief
33% of 21 decks +33% synergy
Nevinyrral's Disk
33% of 21 decks +32% synergy
Staff of Domination
33% of 21 decks +32% synergy
Cloud Key
33% of 21 decks +31% synergy
Sensei's Divining Top
33% of 21 decks +28% synergy
Skullclamp
33% of 21 decks +21% synergy
Salvaging Station
29% of 21 decks +29% synergy
Agatha's Soul Cauldron
29% of 14 decks +27% synergy
Hedron Archive
29% of 21 decks +26% synergy
The Ozolith
26% of 19 decks +23% synergy
Prototype Portal
24% of 21 decks +24% synergy
Mirrorworks
24% of 21 decks +23% synergy
Mycosynth Lattice
24% of 21 decks +23% synergy
Spine of Ish Sah
24% of 21 decks +23% synergy
Darksteel Forge
24% of 21 decks +22% synergy
Phyrexian Altar
24% of 21 decks +20% synergy
Golden Argosy
22% of 18 decks +22% synergy
Manifold Key
20% of 20 decks +18% synergy
Throne of Geth
19% of 21 decks +18% synergy
Helm of Awakening
19% of 21 decks +18% synergy
Contagion Engine
19% of 21 decks +18% synergy
Trading Post
19% of 21 decks +18% synergy
Altar of Dementia
19% of 21 decks +16% synergy
Lightning Greaves
19% of 21 decks -6% synergy
Horizon Stone
17% of 18 decks +16% synergy
Flayer Husk
14% of 21 decks +14% synergy
Ring of Three Wishes
14% of 21 decks +14% synergy
Magistrate's Scepter
14% of 21 decks +14% synergy
Ugin's Nexus
14% of 21 decks +14% synergy
Planar Bridge
14% of 21 decks +14% synergy
Heartstone
14% of 21 decks +14% synergy
Grinding Station
14% of 21 decks +14% synergy
Semblance Anvil
14% of 21 decks +13% synergy
Umbral Mantle
14% of 21 decks +13% synergy
Altar of the Brood
14% of 21 decks +13% synergy
Contagion Clasp
14% of 21 decks +13% synergy
Elixir of Immortality
14% of 21 decks +13% synergy
Ichor Wellspring
14% of 21 decks +13% synergy
Conjurer's Closet
14% of 21 decks +12% synergy
Expedition Map
14% of 21 decks +11% synergy
Panharmonicon
14% of 21 decks +10% synergy
Enchantments
Ugin's Mastery
43% of 14 decks +42% synergy
Planeswalkers
Ugin, the Ineffable
40% of 20 decks +38% synergy
Karn, the Great Creator
20% of 20 decks +19% synergy
Ugin, the Spirit Dragon
19% of 21 decks +18% synergy
Utility Lands
Reliquary Tower
57% of 21 decks +28% synergy
Shrine of the Forsaken Gods
52% of 21 decks +51% synergy
Urza's Tower
52% of 21 decks +51% synergy
Karn's Bastion
50% of 20 decks +45% synergy
War Room
50% of 18 decks +44% synergy
Urza's Power Plant
48% of 21 decks +46% synergy
Urza's Mine
48% of 21 decks +46% synergy
Darksteel Citadel
48% of 21 decks +44% synergy
Temple of the False God
48% of 21 decks +38% synergy
Urza's Workshop
47% of 17 decks +46% synergy
Drannith Ruins
40% of 15 decks +39% synergy
Urza's Saga
39% of 18 decks +32% synergy
Arcane Lighthouse
38% of 21 decks +37% synergy
Tomb of the Spirit Dragon
33% of 21 decks +32% synergy
Field of Ruin
29% of 21 decks +26% synergy
Rogue's Passage
29% of 21 decks +9% synergy
Treasure Vault
28% of 18 decks +25% synergy
Ruins of Oran-Rief
24% of 21 decks +23% synergy
Urza's Factory
24% of 21 decks +23% synergy
Sanctum of Ugin
24% of 21 decks +23% synergy
Ancient Tomb
24% of 21 decks +13% synergy
Crawling Barrens
22% of 18 decks +22% synergy
Witch's Clinic
22% of 18 decks +21% synergy
Tyrite Sanctum
22% of 18 decks +20% synergy
Bonders' Enclave
21% of 19 decks +19% synergy
Zhalfirin Void
20% of 20 decks +19% synergy
Nesting Grounds
20% of 20 decks +18% synergy
Deserted Temple
19% of 21 decks +18% synergy
Mikokoro, Center of the Sea
19% of 21 decks +17% synergy
High Market
19% of 21 decks +16% synergy
Geier Reach Sanitarium
19% of 21 decks +16% synergy
Guildless Commons
17% of 18 decks +15% synergy
Forge of Heroes
15% of 20 decks +14% synergy
Nephalia Academy
14% of 21 decks +14% synergy
Miren, the Moaning Well
14% of 21 decks +14% synergy
Mystifying Maze
14% of 21 decks +14% synergy
Phyrexia's Core
14% of 21 decks +14% synergy
Mage-Ring Network
14% of 21 decks +14% synergy
Homeward Path
14% of 21 decks +13% synergy
Command Beacon
14% of 21 decks +10% synergy
Mana Artifacts
Sol Ring
95% of 21 decks +11% synergy
Gilded Lotus
43% of 21 decks +39% synergy
Everflowing Chalice
43% of 21 decks +38% synergy
Dreamstone Hedron
38% of 21 decks +37% synergy
Thought Vessel
38% of 21 decks +21% synergy
Mind Stone
33% of 21 decks +16% synergy
Worn Powerstone
29% of 21 decks +26% synergy
Mana Vault
29% of 21 decks +22% synergy
Mana Crypt
29% of 21 decks +20% synergy
Liquimetal Torque
28% of 18 decks +24% synergy
Arcane Signet
25% of 20 decks -47% synergy
Grim Monolith
19% of 21 decks +17% synergy
The Mightstone and Weakstone
18% of 17 decks +17% synergy
Coveted Jewel
15% of 20 decks +14% synergy
Blinkmoth Urn
14% of 21 decks +14% synergy
Lands
The Mycosynth Gardens
31% of 16 decks +29% synergy
Mirrex
24% of 17 decks +22% synergy
Power Depot
22% of 18 decks +21% synergy
Myriad Landscape
14% of 21 decks -5% synergy