Blossom Dryad + Gaea's Cradle + Umbral Mantle

Blossom Dryad
Gaea's Cradle
Umbral Mantle

Requires
Blossom Dryad must be on the battlefield. Gaea's Cradle must be on the battlefield. Umbral Mantle must be on the battlefield. Umbral Mantle attached to Blossom Dryad. Blossom Dryad does not have summoning sickness. You control at least four creatures.
Steps
  1. Activate Gaea's Cradle by tapping it, adding at least .
  2. Activate Blossom Dryad by tapping it, untapping Gaea's Cradle.
  3. Activate Blossom Dryad by paying 3 and untapping it, giving itself +2/+2 until end of turn.
  4. Repeat.
Results
Infinitely large Blossom Dryad until end of turn. Infinite mana lands you control can produce.

Wylie Duke, Atiin Hero
0.34% of 580 decks 2 decks
Kenrith, the Returned King
0.01% of 21799 decks 2 decks
God-Eternal Rhonas
1.06% of 94 decks 1 decks
Kinnan, Bonder Prodigy
0.01% of 12348 decks 1 decks
Omnath, Locus of Creation
0.01% of 13678 decks 1 decks
Nikya of the Old Ways
0.04% of 2531 decks 1 decks
Tuvasa the Sunlit
0.02% of 5166 decks 1 decks
Omnath, Locus of Mana
0.02% of 6365 decks 1 decks
Agatha of the Vile Cauldron
0.02% of 4015 decks 1 decks
Esika, God of the Tree
0.01% of 18169 decks 1 decks
Marwyn, the Nurturer
0.02% of 5984 decks 1 decks
Phelddagrif
0.04% of 2627 decks 1 decks
Imaryll, Elfhame Elite
0.25% of 398 decks 1 decks
Kamahl, Fist of Krosa
0.24% of 419 decks 1 decks
High Synergy Cards
Pemmin's Aura
86% of 7 decks +85% synergy
Freed from the Real
86% of 7 decks +84% synergy
Voyaging Satyr
69% of 16 decks +68% synergy
Argothian Elder
62% of 16 decks +62% synergy
Enlightened Tutor
75% of 8 decks +57% synergy
Ley Druid
56% of 16 decks +56% synergy
Krosan Restorer
56% of 16 decks +56% synergy
Staff of Domination
50% of 16 decks +48% synergy
Idyllic Tutor
50% of 8 decks +45% synergy
Nykthos, Shrine to Nyx
50% of 16 decks +44% synergy
Top Cards
Windfall
57% of 7 decks +44% synergy
Eladamri's Call
50% of 8 decks +39% synergy
Worldly Tutor
50% of 16 decks +36% synergy
Esper Sentinel
50% of 8 decks +29% synergy
Swords to Plowshares
50% of 8 decks -13% synergy
Kami of Whispered Hopes
40% of 10 decks +32% synergy
Juniper Order Druid
38% of 16 decks +37% synergy
Ley Weaver
38% of 16 decks +37% synergy
Ashaya, Soul of the Wild
38% of 16 decks +34% synergy
Arbor Elf
38% of 16 decks +31% synergy
Creatures
Fatestitcher
43% of 7 decks +42% synergy
Aphetto Alchemist
43% of 7 decks +42% synergy
Vizier of Tumbling Sands
43% of 7 decks +42% synergy
Kiora's Follower
43% of 7 decks +37% synergy
Emiel the Blessed
38% of 8 decks +34% synergy
Fyndhorn Elves
38% of 16 decks +25% synergy
Elvish Mystic
38% of 16 decks +20% synergy
Llanowar Elves
38% of 16 decks +17% synergy
Birds of Paradise
38% of 16 decks +10% synergy
Circle of Dreams Druid
31% of 16 decks +27% synergy
Nyxbloom Ancient
31% of 16 decks +27% synergy
Bloom Tender
31% of 16 decks +23% synergy
Beast Whisperer
31% of 16 decks +19% synergy
Eternal Witness
31% of 16 decks +11% synergy
Portent Tracker
30% of 10 decks +30% synergy
Hope Tender
25% of 16 decks +25% synergy
Stone-Seeder Hierophant
25% of 16 decks +25% synergy
Magus of the Candelabra
25% of 16 decks +24% synergy
Walking Ballista
25% of 16 decks +22% synergy
Selvala, Heart of the Wilds
25% of 16 decks +20% synergy
Dryad of the Ilysian Grove
25% of 16 decks +17% synergy
Karametra's Acolyte
19% of 16 decks +17% synergy
Llanowar Tribe
19% of 16 decks +17% synergy
Elvish Archdruid
19% of 16 decks +15% synergy
Priest of Titania
19% of 16 decks +15% synergy
Sanctum Weaver
19% of 16 decks +13% synergy
Azusa, Lost but Seeking
19% of 16 decks +11% synergy
Instants
Mystical Tutor
43% of 7 decks +28% synergy
Brainstorm
43% of 7 decks +22% synergy
Crop Rotation
38% of 16 decks +28% synergy
Beast Within
38% of 16 decks -1% synergy
Chord of Calling
31% of 16 decks +25% synergy
Heroic Intervention
25% of 16 decks -5% synergy
Vitalize
19% of 16 decks +18% synergy
Sorceries
Green Sun's Zenith
31% of 16 decks +25% synergy
Bala Ged Recovery
31% of 16 decks +22% synergy
Sylvan Scrying
25% of 16 decks +22% synergy
Finale of Devastation
25% of 16 decks +17% synergy
Sylvan Tutor
19% of 16 decks +18% synergy
Genesis Wave
19% of 16 decks +16% synergy
Eldritch Evolution
19% of 16 decks +14% synergy
Cultivate
19% of 16 decks -27% synergy
Utility Artifacts
Expedition Map
25% of 16 decks +22% synergy
Amulet of Vigor
19% of 16 decks +18% synergy
Illusionist's Bracers
19% of 16 decks +18% synergy
Rings of Brighthearth
19% of 16 decks +17% synergy
Enchantments
Rhystic Study
43% of 7 decks +15% synergy
Sterling Grove
38% of 8 decks +30% synergy
Smothering Tithe
38% of 8 decks +13% synergy
Utopia Sprawl
31% of 16 decks +24% synergy
Exploration
31% of 16 decks +23% synergy
Wild Growth
31% of 16 decks +20% synergy
Sylvan Library
31% of 16 decks +20% synergy
Helix Pinnacle
25% of 16 decks +24% synergy
Mana Reflection
25% of 16 decks +23% synergy
Zendikar Resurgent
25% of 16 decks +22% synergy
Heartbeat of Spring
19% of 16 decks +18% synergy
Quest for Renewal
19% of 16 decks +17% synergy
Song of the Dryads
19% of 16 decks +16% synergy
Cryptolith Rite
19% of 16 decks +15% synergy
Fertile Ground
19% of 16 decks +15% synergy
Growing Rites of Itlimoc
19% of 16 decks +13% synergy
Guardian Project
19% of 16 decks +10% synergy
Utility Lands
Boseiju, Who Endures
50% of 12 decks +30% synergy
Teferi's Isle
43% of 7 decks +43% synergy
Lotus Field
38% of 16 decks +36% synergy
Maze of Ith
38% of 16 decks +35% synergy
Dryad Arbor
31% of 16 decks +27% synergy
Yavimaya, Cradle of Growth
31% of 16 decks +22% synergy
Lotus Vale
25% of 16 decks +25% synergy
Ancient Tomb
25% of 16 decks +15% synergy
Reliquary Tower
25% of 16 decks -5% synergy
Deserted Temple
19% of 16 decks +18% synergy
Jungle Basin
19% of 16 decks +18% synergy
Emergence Zone
19% of 16 decks +16% synergy
Castle Garenbrig
19% of 16 decks +14% synergy
Urza's Saga
19% of 16 decks +12% synergy
Mana Artifacts
Sol Ring
75% of 16 decks -9% synergy
Arcane Signet
38% of 16 decks -35% synergy
Mana Crypt
25% of 16 decks +17% synergy
Basalt Monolith
19% of 16 decks +16% synergy
Lands
Savannah
75% of 8 decks +62% synergy
Tropical Island
71% of 7 decks +57% synergy
Command Tower
62% of 16 decks -11% synergy
Simic Growth Chamber
57% of 7 decks +37% synergy
Tundra
50% of 6 decks +36% synergy
Azorius Chancery
50% of 6 decks +35% synergy
Temple Garden
50% of 8 decks +10% synergy
Rejuvenating Springs
43% of 7 decks +14% synergy
Breeding Pool
43% of 7 decks +2% synergy
Bountiful Promenade
38% of 8 decks +13% synergy
Gemstone Caverns
19% of 16 decks +14% synergy
Windswept Heath
19% of 16 decks +8% synergy
Path of Ancestry
19% of 16 decks -2% synergy
Exotic Orchard
19% of 16 decks -17% synergy