Training Grounds + Umbral Mantle + Arixmethes, Slumbering Isle

Training Grounds
Umbral Mantle
Arixmethes, Slumbering Isle

Requires
Training Grounds must be on the battlefield. Umbral Mantle must be on the battlefield. Arixmethes, Slumbering Isle must be on the battlefield. Arixmethes is a creaure and does not have summoning sickness. Umbral Mantle attached to Arixmethes.
Steps
  1. Activate Arixmethes by tapping it, adding .
  2. Activate Arixmethes by paying 1 and untapping it, giving it +2/+2 until end of turn.
  3. Repeat.
Results
Infinite colored mana. Infinitely large Arixmethes until end of turn.

Arixmethes, Slumbering Isle
0.25% of 3640 decks 9 decks
The Pride of Hull Clade
0.23% of 2139 decks 5 decks
Kinnan, Bonder Prodigy
0.04% of 11969 decks 5 decks
Kydele, Chosen of Kruphix // Thrasios, Triton Hero
1.36% of 368 decks 5 decks
Kenrith, the Returned King
0.02% of 21550 decks 4 decks
Zaxara, the Exemplary
0.02% of 11557 decks 2 decks
Archelos, Lagoon Mystic
0.03% of 3390 decks 1 decks
Experiment Kraj
0.09% of 1173 decks 1 decks
Kenessos, Priest of Thassa
0.02% of 4318 decks 1 decks
Alena, Kessig Trapper // Thrasios, Triton Hero
1.39% of 72 decks 1 decks
Kodama of the East Tree // Thrasios, Triton Hero
0.40% of 250 decks 1 decks
High Synergy Cards
Planar Genesis
86% of 7 decks +78% synergy
Freed from the Real
74% of 35 decks +72% synergy
Pemmin's Aura
60% of 35 decks +59% synergy
Zaxara, the Exemplary
57% of 7 decks +56% synergy
Biomancer's Familiar
54% of 35 decks +52% synergy
Gyre Engineer
49% of 35 decks +48% synergy
Staff of Domination
46% of 35 decks +44% synergy
Kozilek's Unsealing
44% of 9 decks +41% synergy
Kiora's Follower
37% of 35 decks +31% synergy
Kinnan, Bonder Prodigy
35% of 34 decks +31% synergy
Top Cards
Counterspell
57% of 35 decks +14% synergy
Rampant Growth
49% of 35 decks +14% synergy
Cultivate
49% of 35 decks +2% synergy
Birds of Paradise
46% of 35 decks +19% synergy
Kodama's Reach
46% of 35 decks +14% synergy
Growth Spiral
40% of 35 decks +18% synergy
Beast Within
40% of 35 decks +1% synergy
Bloom Tender
37% of 35 decks +29% synergy
Basalt Monolith
34% of 35 decks +32% synergy
Cyclonic Rift
34% of 35 decks +6% synergy
Creatures
Benthic Anomaly
60% of 5 decks +58% synergy
Fanatic of Rhonas
38% of 8 decks +28% synergy
Koma, Cosmos Serpent
32% of 34 decks +27% synergy
Hullbreaker Horror
32% of 34 decks +25% synergy
Incubation Druid
29% of 35 decks +24% synergy
Seedborn Muse
29% of 35 decks +20% synergy
Bedrock Tortoise
28% of 18 decks +27% synergy
Omen Hawker
26% of 27 decks +25% synergy
Laboratory Maniac
26% of 35 decks +21% synergy
Selvala, Heart of the Wilds
26% of 35 decks +21% synergy
Llanowar Elves
26% of 35 decks +5% synergy
Xolatoyac, the Smiling Flood
25% of 16 decks +22% synergy
Voyaging Satyr
23% of 35 decks +22% synergy
Nyxbloom Ancient
23% of 35 decks +19% synergy
Elvish Mystic
23% of 35 decks +5% synergy
Ioreth of the Healing House
23% of 22 decks +21% synergy
The Pride of Hull Clade
21% of 14 decks +19% synergy
Spawning Kraken
21% of 34 decks +19% synergy
Aesi, Tyrant of Gyre Strait
21% of 34 decks +15% synergy
Slinn Voda, the Rising Deep
20% of 35 decks +19% synergy
Vizier of Tumbling Sands
20% of 35 decks +19% synergy
Stormtide Leviathan
20% of 35 decks +18% synergy
Maraleaf Pixie
20% of 35 decks +18% synergy
Ilysian Caryatid
20% of 35 decks +18% synergy
Nezahal, Primal Tide
20% of 35 decks +16% synergy
Hydroid Krasis
20% of 35 decks +15% synergy
Thassa's Oracle
20% of 35 decks +13% synergy
Fyndhorn Elves
20% of 35 decks +7% synergy
Sanctum Weaver
18% of 34 decks +12% synergy
Ley Weaver
17% of 35 decks +17% synergy
Stormsurge Kraken
17% of 35 decks +16% synergy
Serpent of Yawning Depths
17% of 35 decks +16% synergy
Sylvan Caryatid
17% of 35 decks +16% synergy
Scourge of Fleets
17% of 35 decks +15% synergy
Gyre Sage
17% of 35 decks +13% synergy
Murkfiend Liege
17% of 35 decks +13% synergy
Arbor Elf
17% of 35 decks +11% synergy
Eternal Witness
17% of 35 decks -4% synergy
Kiora, Sovereign of the Deep
16% of 25 decks +15% synergy
Walking Bulwark
15% of 33 decks +15% synergy
Kelpie Guide
15% of 34 decks +14% synergy
Charix, the Raging Isle
15% of 34 decks +14% synergy
Utopia Tree
14% of 35 decks +14% synergy
Vigean Graftmage
14% of 35 decks +14% synergy
Krosan Restorer
14% of 35 decks +14% synergy
Tromokratis
14% of 35 decks +13% synergy
Inkwell Leviathan
14% of 35 decks +13% synergy
Crashing Drawbridge
14% of 35 decks +13% synergy
Karametra's Acolyte
14% of 35 decks +12% synergy
Paradise Druid
14% of 35 decks +12% synergy
Instants
Dramatic Reversal
29% of 35 decks +23% synergy
Pongify
29% of 35 decks +17% synergy
Mystical Tutor
29% of 35 decks +13% synergy
Negate
29% of 35 decks +6% synergy
Heroic Intervention
26% of 35 decks -4% synergy
Blue Sun's Zenith
20% of 35 decks +17% synergy
Worldly Tutor
20% of 35 decks +6% synergy
Arcane Denial
20% of 35 decks +0% synergy
Brainstorm
20% of 35 decks -1% synergy
An Offer You Can't Refuse
18% of 34 decks -3% synergy
Rapid Hybridization
17% of 35 decks +8% synergy
Fierce Guardianship
15% of 34 decks -3% synergy
Reality Shift
14% of 35 decks +5% synergy
Force of Will
14% of 35 decks +3% synergy
Pull from Tomorrow
11% of 35 decks +8% synergy
Force of Negation
11% of 35 decks +2% synergy
Nature's Claim
11% of 35 decks +2% synergy
Swan Song
11% of 35 decks -5% synergy
Wash Away
9% of 34 decks +7% synergy
Double Major
9% of 34 decks +5% synergy
Resculpt
9% of 34 decks +4% synergy
Unwind
9% of 35 decks +6% synergy
Simic Charm
9% of 35 decks +5% synergy
Narset's Reversal
9% of 35 decks +5% synergy
Spell Pierce
9% of 35 decks +5% synergy
Dispel
9% of 35 decks +4% synergy
Return to Nature
9% of 35 decks +2% synergy
Pact of Negation
9% of 35 decks +1% synergy
Frantic Search
9% of 35 decks -4% synergy
Return of the Wildspeaker
9% of 35 decks -5% synergy
Mana Drain
9% of 35 decks -7% synergy
Sorceries
Nature's Lore
34% of 35 decks +2% synergy
Farseek
31% of 35 decks -3% synergy
Whelming Wave
26% of 35 decks +24% synergy
Finale of Devastation
20% of 35 decks +12% synergy
Three Visits
20% of 35 decks -5% synergy
Fabricate
17% of 35 decks +11% synergy
Rishkar's Expertise
14% of 35 decks +4% synergy
Ponder
14% of 35 decks +1% synergy
Windfall
14% of 35 decks +1% synergy
Body of Research
12% of 34 decks +11% synergy
Traverse the Outlands
11% of 35 decks +9% synergy
Triumph of the Hordes
11% of 35 decks +8% synergy
Urban Evolution
11% of 35 decks +7% synergy
Awaken the Woods
10% of 31 decks +6% synergy
Tunnel Vision
9% of 35 decks +8% synergy
Animist's Awakening
9% of 35 decks +7% synergy
Explosive Vegetation
9% of 35 decks +5% synergy
Regrowth
9% of 35 decks +5% synergy
Serum Visions
9% of 35 decks +4% synergy
Overwhelming Stampede
9% of 35 decks +3% synergy
Preordain
9% of 35 decks -2% synergy
Utility Artifacts
Lightning Greaves
29% of 35 decks +3% synergy
Swiftfoot Boots
29% of 35 decks +1% synergy
Isochron Scepter
23% of 35 decks +20% synergy
Thousand-Year Elixir
17% of 35 decks +15% synergy
Sensei's Divining Top
17% of 35 decks +12% synergy
Grafted Exoskeleton
14% of 35 decks +13% synergy
Fireshrieker
14% of 35 decks +13% synergy
Rings of Brighthearth
14% of 35 decks +13% synergy
Heartstone
11% of 35 decks +11% synergy
Sword of the Paruns
9% of 35 decks +8% synergy
Kefnet's Monument
9% of 35 decks +8% synergy
Venser's Journal
9% of 35 decks +8% synergy
Wayfarer's Bauble
9% of 35 decks -2% synergy
Enchantments
Monstrous Vortex
60% of 5 decks +57% synergy
Ominous Seas
21% of 34 decks +18% synergy
Garruk's Uprising
21% of 34 decks +5% synergy
Utopia Sprawl
20% of 35 decks +12% synergy
Mystic Remora
20% of 35 decks +2% synergy
Rhystic Study
20% of 35 decks -8% synergy
Intruder Alarm
17% of 35 decks +15% synergy
Cryptolith Rite
17% of 35 decks +14% synergy
Leyline of Anticipation
17% of 35 decks +13% synergy
Wizard Class
15% of 34 decks +10% synergy
Mana Reflection
11% of 35 decks +10% synergy
Fertile Ground
11% of 35 decks +7% synergy
Simic Ascendancy
11% of 35 decks +6% synergy
Teferi's Ageless Insight
9% of 34 decks +4% synergy
Unnatural Growth
9% of 34 decks +3% synergy
Treefolk Umbra
9% of 35 decks +8% synergy
Quest for Ula's Temple
9% of 35 decks +8% synergy
Retreat to Coralhelm
9% of 35 decks +6% synergy
Burgeoning
9% of 35 decks +5% synergy
Aqueous Form
9% of 35 decks +5% synergy
Greater Good
9% of 35 decks +4% synergy
Exploration
9% of 35 decks +0% synergy
Guardian Project
9% of 35 decks -0% synergy
Wild Growth
9% of 35 decks -2% synergy
Sylvan Library
9% of 35 decks -3% synergy
Planeswalkers
Jace, Wielder of Mysteries
23% of 35 decks +19% synergy
Kiora, Behemoth Beckoner
17% of 35 decks +13% synergy
Kiora, Master of the Depths
11% of 35 decks +10% synergy
Teferi, Temporal Pilgrim
10% of 31 decks +8% synergy
Karn, the Great Creator
9% of 35 decks +7% synergy
Narset, Parter of Veils
9% of 35 decks +3% synergy
Utility Lands
Reliquary Tower
51% of 35 decks +22% synergy
Shifting Woodland
33% of 9 decks +23% synergy
Alchemist's Refuge
31% of 35 decks +25% synergy
Yavimaya, Cradle of Growth
26% of 34 decks +17% synergy
Boseiju, Who Endures
26% of 34 decks +7% synergy
Otawara, Soaring City
21% of 34 decks +4% synergy
Temple of the False God
17% of 35 decks +7% synergy
Thespian's Stage
14% of 35 decks +12% synergy
Minamo, School at Water's Edge
14% of 35 decks +10% synergy
Mystic Sanctuary
14% of 35 decks +2% synergy
Rogue's Passage
14% of 35 decks -5% synergy
Access Tunnel
12% of 34 decks +10% synergy
Coral Atoll
11% of 35 decks +11% synergy
Castle Vantress
11% of 35 decks +7% synergy
Ancient Tomb
11% of 35 decks +1% synergy
Dark Depths
9% of 35 decks +7% synergy
Lotus Field
9% of 35 decks +7% synergy
Mana Artifacts
Sol Ring
86% of 35 decks +1% synergy
Arcane Signet
51% of 35 decks -21% synergy
Thought Vessel
29% of 35 decks +12% synergy
Simic Signet
26% of 35 decks +11% synergy
Gilded Lotus
17% of 35 decks +14% synergy
Decanter of Endless Water
15% of 33 decks +10% synergy
Mana Vault
14% of 35 decks +8% synergy
Chromatic Orrery
12% of 34 decks +10% synergy
Paradise Mantle
11% of 35 decks +11% synergy
Grim Monolith
11% of 35 decks +9% synergy
Mox Amber
11% of 35 decks +7% synergy
Everflowing Chalice
11% of 35 decks +7% synergy
Talisman of Curiosity
11% of 35 decks -1% synergy
Commander's Sphere
11% of 35 decks -4% synergy
Fellwar Stone
11% of 35 decks -10% synergy
Machine God's Effigy
10% of 31 decks +8% synergy
Gemstone Array
9% of 35 decks +8% synergy
Chrome Mox
9% of 35 decks +2% synergy
Mana Crypt
9% of 35 decks -1% synergy
Lands
Command Tower
63% of 35 decks -11% synergy
Hedge Maze
62% of 16 decks +48% synergy
Ketria Triome
60% of 5 decks +27% synergy
Stomping Ground
60% of 5 decks +19% synergy
Hinterland Harbor
57% of 35 decks +30% synergy
Zagoth Triome
57% of 7 decks +26% synergy
Overflowing Basin
56% of 9 decks +45% synergy
Breeding Pool
54% of 35 decks +13% synergy
Simic Growth Chamber
46% of 35 decks +26% synergy
Dimir Aqueduct
43% of 7 decks +26% synergy
Yavimaya Coast
43% of 35 decks +16% synergy
Watery Grave
43% of 7 decks +2% synergy
Overgrown Tomb
43% of 7 decks +0% synergy
Rejuvenating Springs
41% of 34 decks +13% synergy
Temple of Mystery
37% of 35 decks +20% synergy
Dreamroot Cascade
35% of 34 decks +17% synergy
Flooded Grove
34% of 35 decks +22% synergy
Escape Tunnel
29% of 14 decks +27% synergy
Misty Rainforest
29% of 35 decks +17% synergy
Vineglimmer Snarl
26% of 34 decks +16% synergy
Evolving Wilds
23% of 35 decks +2% synergy
Tangled Islet
21% of 33 decks +14% synergy
Exotic Orchard
20% of 35 decks -16% synergy
Tropical Island
17% of 35 decks +3% synergy
Terramorphic Expanse
17% of 35 decks +1% synergy
Myriad Landscape
17% of 35 decks -3% synergy
Thornwood Falls
14% of 35 decks +7% synergy
Fabled Passage
14% of 35 decks +5% synergy
Polluted Delta
11% of 35 decks +0% synergy
Verdant Catacombs
11% of 35 decks -0% synergy
Rimewood Falls
9% of 34 decks +4% synergy
Barkchannel Pathway
9% of 34 decks -0% synergy
Botanical Sanctum
9% of 35 decks +5% synergy
Waterlogged Grove
9% of 35 decks +1% synergy
Windswept Heath
9% of 35 decks -2% synergy