Zameck Guildmage + Lesser Masticore + Ashnod's Altar

Zameck Guildmage
Lesser Masticore
Ashnod's Altar

Requires
Zameck Guildmage must be on the battlefield. Lesser Masticore must be on the battlefield. Ashnod's Altar must be on the battlefield. Mana needed:
Steps
  1. Activate Zameck Guildmage's first ability by paying , causing each creature you control to enter the battlefield with an additional +1/+1 counter this turn.
  2. Activate Ashnod's Altar by sacrificing Lesser Masticore, adding .
  3. Lesser Masticore dies, triggering its persist ability, returning it from your graveyard to the battlefield with no -1/-1 counters due to Zameck Guildmage.
  4. Repeat from step 2.
Results
Infinite colorless mana. Infinite death triggers. Infinite ETB. Infinite LTB. Infinite sacrifice triggers.

Falco Spara, Pactweaver
0.09% of 4549 decks 4 decks
Kyodai, Soul of Kamigawa
0.10% of 2012 decks 2 decks
The Swarmlord
0.04% of 2322 decks 1 decks
Reyhan, Last of the Abzan // Sakashima of a Thousand Faces
0.35% of 287 decks 1 decks
Jegantha, the Wellspring
0.07% of 1469 decks 1 decks
Kenrith, the Returned King
0.00% of 23873 decks 1 decks
Rukarumel, Biologist
0.03% of 3543 decks 1 decks
Rashmi and Ragavan
0.02% of 5848 decks 1 decks
High Synergy Cards
Putrid Goblin
100% of 6 decks +99% synergy
Persistent Constrictor
100% of 4 decks +98% synergy
Murderous Redcap
100% of 5 decks +98% synergy
Grumgully, the Generous
100% of 7 decks +98% synergy
Glen Elendra Archmage
92% of 12 decks +89% synergy
Thermopod
86% of 7 decks +85% synergy
Lingering Tormentor
83% of 6 decks +83% synergy
Rendclaw Trow
83% of 6 decks +83% synergy
Puppeteer Clique
83% of 6 decks +82% synergy
Restless Apparition
80% of 5 decks +80% synergy
Top Cards
Goblin Bombardment
86% of 7 decks +79% synergy
Viscera Seer
83% of 6 decks +74% synergy
Heartmender
78% of 9 decks +78% synergy
Safehold Elite
78% of 9 decks +78% synergy
Kitchen Finks
78% of 9 decks +77% synergy
River Kelpie
75% of 12 decks +74% synergy
Scuzzback Marauders
71% of 7 decks +71% synergy
Grazing Kelpie
67% of 12 decks +67% synergy
Aerie Ouphes
67% of 12 decks +67% synergy
Renata, Called to the Hunt
67% of 12 decks +65% synergy
Creatures
Obstinate Gargoyle
75% of 4 decks +75% synergy
Gev, Scaled Scorch
75% of 4 decks +74% synergy
Trapjaw Kelpie
58% of 12 decks +58% synergy
Woodfall Primus
58% of 12 decks +57% synergy
Kithkin Spellduster
56% of 9 decks +56% synergy
Good-Fortune Unicorn
56% of 9 decks +53% synergy
Melira, Sylvok Outcast
50% of 12 decks +50% synergy
Bloodspore Thrinax
50% of 12 decks +50% synergy
Furystoke Giant
43% of 7 decks +43% synergy
Thunderblust
43% of 7 decks +43% synergy
Combine Guildmage
42% of 12 decks +42% synergy
Master Biomancer
42% of 12 decks +38% synergy
Metallic Mimic
33% of 12 decks +32% synergy
Ivy Lane Denizen
33% of 12 decks +32% synergy
Arwen, Weaver of Hope
33% of 12 decks +31% synergy
Vega, the Watcher
33% of 9 decks +30% synergy
Llanowar Elves
33% of 12 decks +12% synergy
Instants
Swords to Plowshares
44% of 9 decks -18% synergy
An Offer You Can't Refuse
42% of 12 decks +20% synergy
Beast Within
42% of 12 decks +5% synergy
Swan Song
33% of 12 decks +17% synergy
Generous Gift
33% of 9 decks +9% synergy
Path to Exile
33% of 9 decks -13% synergy
Negate
25% of 12 decks +3% synergy
Heroic Intervention
25% of 12 decks -5% synergy
Counterspell
25% of 12 decks -17% synergy
Sorceries
Bala Ged Recovery
42% of 12 decks +33% synergy
Nature's Lore
42% of 12 decks +10% synergy
Farseek
42% of 12 decks +7% synergy
Rampant Growth
42% of 12 decks +7% synergy
Cultivate
42% of 12 decks -3% synergy
Three Visits
25% of 12 decks +1% synergy
Utility Artifacts
Phyrexian Altar
67% of 12 decks +63% synergy
Blasting Station
50% of 12 decks +49% synergy
Altar of Dementia
50% of 12 decks +47% synergy
Altar of the Brood
33% of 12 decks +32% synergy
The Great Henge
33% of 12 decks +24% synergy
Spawning Pit
25% of 12 decks +25% synergy
Codex Shredder
25% of 12 decks +24% synergy
Birthing Pod
25% of 12 decks +23% synergy
Ozolith, the Shattered Spire
25% of 12 decks +20% synergy
Mind Stone
25% of 12 decks +8% synergy
Enchantments
Rhythm of the Wild
57% of 7 decks +34% synergy
Master Chef
50% of 12 decks +49% synergy
Impact Tremors
43% of 7 decks +33% synergy
Tribute to the World Tree
42% of 12 decks +35% synergy
Martyr's Cause
33% of 9 decks +33% synergy
Cathars' Crusade
33% of 9 decks +28% synergy
Evolutionary Leap
25% of 12 decks +24% synergy
Utility Lands
Otawara, Soaring City
42% of 12 decks +25% synergy
Boseiju, Who Endures
42% of 12 decks +23% synergy
Dryad Arbor
25% of 12 decks +21% synergy
Mana Artifacts
Arcane Signet
100% of 12 decks +28% synergy
Sol Ring
92% of 12 decks +7% synergy
Fellwar Stone
42% of 12 decks +21% synergy
Talisman of Curiosity
25% of 12 decks +12% synergy
Lands
Command Tower
100% of 12 decks +26% synergy
The World Tree
80% of 5 decks +48% synergy
Temple Garden
78% of 9 decks +38% synergy
Breeding Pool
75% of 12 decks +35% synergy
Hallowed Fountain
67% of 9 decks +26% synergy
Overgrown Tomb
67% of 6 decks +25% synergy
Indatha Triome
60% of 5 decks +30% synergy
Jetmir's Garden
60% of 5 decks +29% synergy
Sacred Foundry
60% of 5 decks +25% synergy
Blood Crypt
60% of 5 decks +22% synergy
Misty Rainforest
58% of 12 decks +47% synergy
Exotic Orchard
58% of 12 decks +22% synergy
Stomping Ground
57% of 7 decks +17% synergy
Watery Grave
50% of 6 decks +10% synergy
Savannah
44% of 9 decks +32% synergy
Tundra
44% of 9 decks +31% synergy
Ketria Triome
43% of 7 decks +11% synergy
Steam Vents
43% of 7 decks +5% synergy
Windswept Heath
42% of 12 decks +31% synergy
Flooded Strand
42% of 12 decks +31% synergy
Tropical Island
33% of 12 decks +19% synergy
Bountiful Promenade
33% of 9 decks +10% synergy
Spara's Headquarters
33% of 9 decks +4% synergy
Mana Confluence
25% of 12 decks +18% synergy
City of Brass
25% of 12 decks +17% synergy
Wooded Foothills
25% of 12 decks +15% synergy
Scalding Tarn
25% of 12 decks +14% synergy
Verdant Catacombs
25% of 12 decks +14% synergy
Polluted Delta
25% of 12 decks +13% synergy