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.

Omarthis, Ghostfire Initiate
0.39% of 1529 decks 6 decks
High Synergy Cards
Dross Scorpion
82% of 22 decks +82% synergy
Triskelion
82% of 22 decks +81% synergy
Top Cards
Steel Overseer
73% of 22 decks +71% synergy
Thran Dynamo
73% of 22 decks +68% synergy
Basalt Monolith
68% of 22 decks +65% synergy
Liberator, Urza's Battlethopter
60% of 15 decks +58% synergy
Rings of Brighthearth
59% of 22 decks +57% synergy
Myr Battlesphere
59% of 22 decks +57% synergy
Krark-Clan Ironworks
55% of 22 decks +53% synergy
Walking Ballista
55% of 22 decks +52% synergy
Unwinding Clock
55% of 22 decks +52% synergy
Foundry Inspector
55% of 22 decks +50% synergy
Creatures
Esper Sentinel
75% of 4 decks +65% synergy
Hangarback Walker
50% of 22 decks +49% synergy
Syr Ginger, the Meal Ender
50% of 12 decks +49% synergy
Disciple of the Vault
50% of 6 decks +49% synergy
Mikaeus, the Unhallowed
50% of 6 decks +49% synergy
Myr Retriever
50% of 22 decks +48% synergy
Solemn Simulacrum
50% of 22 decks +36% synergy
Thopter Squadron
45% of 22 decks +45% synergy
Scrap Trawler
45% of 22 decks +43% synergy
Threefold Thunderhulk
44% of 9 decks +43% synergy
Jhoira's Familiar
43% of 21 decks +41% synergy
Reckless Fireweaver
43% of 7 decks +41% synergy
Kuldotha Forgemaster
41% of 22 decks +40% synergy
Hexavus
40% of 15 decks +40% synergy
Cryptic Trilobite
38% of 21 decks +38% synergy
Stonecoil Serpent
38% of 21 decks +37% synergy
Triskelavus
36% of 22 decks +36% synergy
Arcbound Ravager
36% of 22 decks +36% synergy
Drillworks Mole
33% of 18 decks +33% synergy
Arcbound Reclaimer
32% of 22 decks +32% synergy
Arcbound Crusher
32% of 22 decks +32% synergy
Palladium Myr
32% of 22 decks +30% synergy
Karn, Legacy Reforged
31% of 13 decks +30% synergy
Patchwork Automaton
28% of 18 decks +28% synergy
Metalworker
27% of 22 decks +27% synergy
Junk Diver
27% of 22 decks +27% synergy
Abstruse Archaic
25% of 12 decks +24% synergy
Skittering Cicada
25% of 12 decks +24% synergy
Ugin's Conjurant
24% of 21 decks +24% synergy
Workhorse
23% of 22 decks +23% synergy
Karn, Silver Golem
23% of 22 decks +23% synergy
Shimmer Myr
23% of 22 decks +21% synergy
Wurmcoil Engine
23% of 22 decks +21% synergy
Iron Apprentice
22% of 18 decks +22% synergy
Scrapyard Recombiner
19% of 21 decks +19% synergy
Meteor Golem
19% of 21 decks +17% synergy
Cogwork Assembler
18% of 22 decks +18% synergy
Voltaic Construct
18% of 22 decks +18% synergy
Scarecrone
18% of 22 decks +18% synergy
Endless One
18% of 22 decks +18% synergy
Duplicant
18% of 22 decks +17% synergy
Phyrexian Triniform
16% of 19 decks +15% synergy
Wandering Archaic
16% of 19 decks +14% synergy
Su-Chi
14% of 22 decks +14% synergy
Battered Golem
14% of 22 decks +14% synergy
Cathodion
14% of 22 decks +13% synergy
Arcbound Worker
14% of 22 decks +13% synergy
Mindless Automaton
14% of 22 decks +13% synergy
Mycosynth Golem
14% of 22 decks +13% synergy
Workshop Assistant
14% of 22 decks +13% synergy
Instants
Desecrate Reality
25% of 12 decks +24% synergy
Scour from Existence
14% of 22 decks +13% synergy
Sorceries
All Is Dust
41% of 22 decks +39% synergy
Utility Artifacts
Myr Turbine
50% of 22 decks +50% synergy
Nim Deathmantle
50% of 22 decks +49% synergy
Mystic Forge
48% of 21 decks +45% synergy
Forsaken Monument
47% of 19 decks +46% synergy
Blasting Station
45% of 22 decks +45% synergy
Voltaic Key
45% of 22 decks +45% synergy
Blade of the Bloodchief
41% of 22 decks +40% synergy
Nevinyrral's Disk
41% of 22 decks +40% synergy
Sensei's Divining Top
41% of 22 decks +35% synergy
Salvaging Station
36% of 22 decks +36% synergy
Prototype Portal
36% of 22 decks +36% synergy
Animation Module
36% of 22 decks +36% synergy
Mycosynth Lattice
36% of 22 decks +36% synergy
Darksteel Forge
36% of 22 decks +35% synergy
Phyrexian Altar
36% of 22 decks +32% synergy
Cloud Key
32% of 22 decks +30% synergy
Sculpting Steel
32% of 22 decks +30% synergy
Altar of Dementia
32% of 22 decks +29% synergy
Skullclamp
32% of 22 decks +19% synergy
Lux Cannon
27% of 22 decks +27% synergy
Ugin's Nexus
27% of 22 decks +27% synergy
Grinding Station
27% of 22 decks +27% synergy
Andúril, Narsil Reforged
27% of 11 decks +26% synergy
Staff of Domination
27% of 22 decks +25% synergy
Agatha's Soul Cauldron
25% of 12 decks +23% synergy
The Ozolith
25% of 20 decks +22% synergy
Planar Portal
23% of 22 decks +23% synergy
Flayer Husk
23% of 22 decks +23% synergy
Throne of Geth
23% of 22 decks +22% synergy
Mirrorworks
23% of 22 decks +22% synergy
Spine of Ish Sah
23% of 22 decks +22% synergy
Umbral Mantle
23% of 22 decks +22% synergy
Contagion Engine
23% of 22 decks +22% synergy
Trading Post
23% of 22 decks +21% synergy
Golden Argosy
22% of 18 decks +22% synergy
Heartstone
18% of 22 decks +18% synergy
Contagion Clasp
18% of 22 decks +17% synergy
Sword of Truth and Justice
14% of 21 decks +13% synergy
Manifold Key
14% of 21 decks +13% synergy
Gorgon Flail
14% of 22 decks +13% synergy
Magistrate's Scepter
14% of 22 decks +13% synergy
Mindslaver
14% of 22 decks +13% synergy
Power Conduit
14% of 22 decks +13% synergy
Cloudstone Curio
14% of 22 decks +13% synergy
Altar of the Brood
14% of 22 decks +12% synergy
Elixir of Immortality
14% of 22 decks +12% synergy
Ichor Wellspring
14% of 22 decks +12% synergy
Conjurer's Closet
14% of 22 decks +12% synergy
Isochron Scepter
14% of 22 decks +11% synergy
Expedition Map
14% of 22 decks +10% synergy
Enchantments
Ugin's Mastery
42% of 12 decks +41% synergy
Planeswalkers
Ugin, the Ineffable
43% of 21 decks +41% synergy
Ugin, the Spirit Dragon
27% of 22 decks +26% synergy
Karn, the Great Creator
24% of 21 decks +23% synergy
Karn Liberated
14% of 22 decks +13% synergy
Utility Lands
Seat of the Synod
75% of 4 decks +72% synergy
Inventors' Fair
68% of 22 decks +64% synergy
Buried Ruin
68% of 22 decks +63% synergy
Darksteel Citadel
59% of 22 decks +55% synergy
Reliquary Tower
55% of 22 decks +25% synergy
Vault of Whispers
50% of 6 decks +48% synergy
Karn's Bastion
48% of 21 decks +43% synergy
Urza's Saga
47% of 19 decks +40% synergy
Drannith Ruins
46% of 13 decks +45% synergy
Shrine of the Forsaken Gods
45% of 22 decks +44% synergy
Urza's Tower
45% of 22 decks +44% synergy
Temple of the False God
45% of 22 decks +36% synergy
Great Furnace
43% of 7 decks +40% synergy
War Room
42% of 19 decks +36% synergy
Urza's Power Plant
41% of 22 decks +39% synergy
Urza's Mine
41% of 22 decks +39% synergy
Urza's Workshop
40% of 15 decks +39% synergy
Treasure Vault
33% of 18 decks +31% synergy
Tomb of the Spirit Dragon
32% of 22 decks +31% synergy
Arcane Lighthouse
32% of 22 decks +30% synergy
Mikokoro, Center of the Sea
32% of 22 decks +30% synergy
Rogue's Passage
27% of 22 decks +8% synergy
Zhalfirin Void
24% of 21 decks +23% synergy
Nesting Grounds
24% of 21 decks +22% synergy
Miren, the Moaning Well
23% of 22 decks +23% synergy
Ruins of Oran-Rief
23% of 22 decks +22% synergy
Sanctum of Ugin
23% of 22 decks +22% synergy
Field of Ruin
23% of 22 decks +20% synergy
Geier Reach Sanitarium
23% of 22 decks +19% synergy
Witch's Clinic
21% of 19 decks +20% synergy
Guildless Commons
21% of 19 decks +20% synergy
Tyrite Sanctum
21% of 19 decks +19% synergy
Bonders' Enclave
20% of 20 decks +18% synergy
Forge of Heroes
19% of 21 decks +18% synergy
Urza's Factory
18% of 22 decks +18% synergy
Mage-Ring Network
18% of 22 decks +18% synergy
High Market
18% of 22 decks +15% synergy
Ancient Tomb
18% of 22 decks +8% synergy
Crawling Barrens
16% of 19 decks +15% synergy
Blast Zone
14% of 21 decks +13% synergy
Emergence Zone
14% of 21 decks +12% synergy
Mystifying Maze
14% of 22 decks +13% synergy
Phyrexia's Core
14% of 22 decks +13% synergy
Deserted Temple
14% of 22 decks +13% synergy
Arch of Orazca
14% of 22 decks +13% synergy
Radiant Fountain
14% of 22 decks +12% synergy
Homeward Path
14% of 22 decks +12% synergy
Command Beacon
14% of 22 decks +9% synergy
Mana Artifacts
Sol Ring
91% of 22 decks +6% synergy
Everflowing Chalice
55% of 22 decks +50% synergy
Gilded Lotus
50% of 22 decks +46% synergy
Dreamstone Hedron
36% of 22 decks +35% synergy
Mind Stone
32% of 22 decks +14% synergy
Liquimetal Torque
32% of 19 decks +28% synergy
Mana Crypt
27% of 22 decks +16% synergy
Thought Vessel
27% of 22 decks +11% synergy
Arcane Signet
24% of 21 decks -48% synergy
Staff of Compleation
23% of 13 decks +21% synergy
Mana Vault
23% of 22 decks +16% synergy
The Mightstone and Weakstone
20% of 15 decks +19% synergy
Hedron Archive
18% of 22 decks +15% synergy
Chromatic Orrery
15% of 20 decks +13% synergy
Blinkmoth Urn
14% of 22 decks +13% synergy
Darksteel Ingot
14% of 22 decks +12% synergy
Grim Monolith
14% of 22 decks +12% synergy
Worn Powerstone
14% of 22 decks +11% synergy
Lands
Captivating Cave
38% of 8 decks +37% synergy
The Mycosynth Gardens
36% of 14 decks +33% synergy
Mirrex
27% of 15 decks +25% synergy
Power Depot
21% of 19 decks +20% synergy
Myriad Landscape
14% of 22 decks -7% synergy
Command Tower
14% of 22 decks -60% synergy