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.

Kydele, Chosen of Kruphix // Thrasios, Triton Hero
1.36% of 368 decks 5 decks
Arixmethes, Slumbering Isle
0.23% of 3513 decks 8 decks
Kinnan, Bonder Prodigy
0.04% of 11174 decks 4 decks
Kenrith, the Returned King
0.02% of 20869 decks 4 decks
High Synergy Cards
Planar Genesis
100% of 5 decks +98% synergy
Freed from the Real
77% of 31 decks +76% synergy
Top Cards
Pemmin's Aura
61% of 31 decks +61% synergy
Biomancer's Familiar
58% of 31 decks +57% synergy
Counterspell
58% of 31 decks +37% synergy
Cultivate
58% of 31 decks +36% synergy
Zaxara, the Exemplary
57% of 7 decks +57% synergy
Kozilek's Unsealing
57% of 7 decks +55% synergy
Rampant Growth
55% of 31 decks +39% synergy
Kodama's Reach
52% of 31 decks +37% synergy
Gyre Engineer
48% of 31 decks +48% synergy
Staff of Domination
45% of 31 decks +43% synergy
Creatures
Benthic Anomaly
75% of 4 decks +73% synergy
Fanatic of Rhonas
50% of 6 decks +45% synergy
Birds of Paradise
45% of 31 decks +33% synergy
Kiora's Follower
42% of 31 decks +41% synergy
Kinnan, Bonder Prodigy
40% of 30 decks +39% synergy
Koma, Cosmos Serpent
37% of 30 decks +35% synergy
Bloom Tender
35% of 31 decks +32% synergy
Seedborn Muse
32% of 31 decks +28% synergy
Xolatoyac, the Smiling Flood
31% of 13 decks +30% synergy
Hullbreaker Horror
30% of 30 decks +26% synergy
The Pride of Hull Clade
27% of 11 decks +27% synergy
Llanowar Elves
26% of 31 decks +16% synergy
Spawning Kraken
23% of 30 decks +23% synergy
Aesi, Tyrant of Gyre Strait
23% of 30 decks +22% synergy
Voyaging Satyr
23% of 31 decks +22% synergy
Slinn Voda, the Rising Deep
23% of 31 decks +22% synergy
Hydroid Krasis
23% of 31 decks +22% synergy
Nezahal, Primal Tide
23% of 31 decks +21% synergy
Nyxbloom Ancient
23% of 31 decks +21% synergy
Selvala, Heart of the Wilds
23% of 31 decks +20% synergy
Laboratory Maniac
23% of 31 decks +20% synergy
Incubation Druid
23% of 31 decks +20% synergy
Thassa's Oracle
23% of 31 decks +19% synergy
Elvish Mystic
23% of 31 decks +14% synergy
Ioreth of the Healing House
22% of 18 decks +21% synergy
Omen Hawker
22% of 23 decks +21% synergy
Bedrock Tortoise
21% of 14 decks +21% synergy
Stormsurge Kraken
19% of 31 decks +19% synergy
Maraleaf Pixie
19% of 31 decks +19% synergy
Serpent of Yawning Depths
19% of 31 decks +19% synergy
Vizier of Tumbling Sands
19% of 31 decks +19% synergy
Stormtide Leviathan
19% of 31 decks +19% synergy
Murkfiend Liege
19% of 31 decks +18% synergy
Scourge of Fleets
19% of 31 decks +18% synergy
Ilysian Caryatid
19% of 31 decks +18% synergy
Arbor Elf
19% of 31 decks +16% synergy
Fyndhorn Elves
19% of 31 decks +13% synergy
Eternal Witness
19% of 31 decks +9% synergy
Kiora, Sovereign of the Deep
19% of 21 decks +19% synergy
Sanctum Weaver
17% of 30 decks +14% synergy
Ley Weaver
16% of 31 decks +16% synergy
Tromokratis
16% of 31 decks +16% synergy
Inkwell Leviathan
16% of 31 decks +16% synergy
Sylvan Caryatid
16% of 31 decks +15% synergy
Gyre Sage
16% of 31 decks +14% synergy
Tatyova, Benthic Druid
16% of 31 decks +14% synergy
Walking Ballista
16% of 31 decks +14% synergy
Lotus Cobra
16% of 31 decks +13% synergy
Azusa, Lost but Seeking
16% of 31 decks +13% synergy
Gretchen Titchwillow
13% of 30 decks +13% synergy
Instants
Growth Spiral
45% of 31 decks +40% synergy
Beast Within
42% of 31 decks +24% synergy
Cyclonic Rift
35% of 31 decks +22% synergy
Pongify
29% of 31 decks +23% synergy
Negate
29% of 31 decks +18% synergy
Heroic Intervention
29% of 31 decks +15% synergy
Dramatic Reversal
26% of 31 decks +23% synergy
Mystical Tutor
26% of 31 decks +18% synergy
Worldly Tutor
23% of 31 decks +16% synergy
Brainstorm
23% of 31 decks +12% synergy
An Offer You Can't Refuse
20% of 30 decks +10% synergy
Blue Sun's Zenith
19% of 31 decks +18% synergy
Fierce Guardianship
17% of 30 decks +8% synergy
Rapid Hybridization
16% of 31 decks +12% synergy
Force of Will
16% of 31 decks +11% synergy
Arcane Denial
16% of 31 decks +7% synergy
Reality Shift
13% of 31 decks +8% synergy
Nature's Claim
13% of 31 decks +8% synergy
Swan Song
13% of 31 decks +5% synergy
Double Major
10% of 30 decks +9% synergy
Wash Away
10% of 30 decks +9% synergy
Simic Charm
10% of 31 decks +9% synergy
Pull from Tomorrow
10% of 31 decks +8% synergy
Pact of Negation
10% of 31 decks +6% synergy
Frantic Search
10% of 31 decks +4% synergy
Return of the Wildspeaker
10% of 31 decks +3% synergy
Sorceries
Nature's Lore
39% of 31 decks +24% synergy
Farseek
35% of 31 decks +19% synergy
Whelming Wave
26% of 31 decks +25% synergy
Finale of Devastation
23% of 31 decks +19% synergy
Three Visits
19% of 31 decks +8% synergy
Fabricate
16% of 31 decks +13% synergy
Rishkar's Expertise
16% of 31 decks +11% synergy
Ponder
16% of 31 decks +10% synergy
Body of Research
13% of 30 decks +13% synergy
Urban Evolution
13% of 31 decks +12% synergy
Traverse the Outlands
13% of 31 decks +12% synergy
Triumph of the Hordes
13% of 31 decks +11% synergy
Windfall
13% of 31 decks +6% synergy
Awaken the Woods
11% of 27 decks +9% synergy
Animist's Awakening
10% of 31 decks +9% synergy
Explosive Vegetation
10% of 31 decks +8% synergy
Serum Visions
10% of 31 decks +7% synergy
Overwhelming Stampede
10% of 31 decks +7% synergy
Preordain
10% of 31 decks +4% synergy
Utility Artifacts
Lightning Greaves
29% of 31 decks +4% synergy
Swiftfoot Boots
29% of 31 decks +1% synergy
Thousand-Year Elixir
19% of 31 decks +17% synergy
Isochron Scepter
19% of 31 decks +17% synergy
Grafted Exoskeleton
16% of 31 decks +15% synergy
Fireshrieker
16% of 31 decks +14% synergy
Sensei's Divining Top
16% of 31 decks +10% synergy
Heartstone
13% of 31 decks +12% synergy
Rings of Brighthearth
13% of 31 decks +11% synergy
Sword of the Paruns
10% of 31 decks +9% synergy
Kefnet's Monument
10% of 31 decks +9% synergy
Wayfarer's Bauble
10% of 31 decks -1% synergy
Enchantments
Monstrous Vortex
75% of 4 decks +73% synergy
Garruk's Uprising
23% of 30 decks +16% synergy
Utopia Sprawl
23% of 31 decks +19% synergy
Mystic Remora
23% of 31 decks +14% synergy
Rhystic Study
23% of 31 decks +9% synergy
Ominous Seas
20% of 30 decks +19% synergy
Leyline of Anticipation
19% of 31 decks +17% synergy
Intruder Alarm
16% of 31 decks +15% synergy
Cryptolith Rite
16% of 31 decks +14% synergy
Wizard Class
13% of 30 decks +11% synergy
Simic Ascendancy
13% of 31 decks +12% synergy
Fertile Ground
13% of 31 decks +11% synergy
Quest for Ula's Temple
10% of 31 decks +9% synergy
Mana Reflection
10% of 31 decks +9% synergy
Retreat to Coralhelm
10% of 31 decks +8% synergy
Burgeoning
10% of 31 decks +8% synergy
Greater Good
10% of 31 decks +7% synergy
Exploration
10% of 31 decks +6% synergy
Guardian Project
10% of 31 decks +6% synergy
Wild Growth
10% of 31 decks +5% synergy
Sylvan Library
10% of 31 decks +4% synergy
Planeswalkers
Kiora, Behemoth Beckoner
19% of 31 decks +19% synergy
Jace, Wielder of Mysteries
19% of 31 decks +18% synergy
Kiora, Master of the Depths
13% of 31 decks +13% synergy
Narset, Parter of Veils
10% of 31 decks +7% synergy
Utility Lands
Reliquary Tower
48% of 31 decks +19% synergy
Alchemist's Refuge
32% of 31 decks +31% synergy
Boseiju, Who Endures
27% of 30 decks +18% synergy
Yavimaya, Cradle of Growth
27% of 30 decks +17% synergy
Otawara, Soaring City
20% of 30 decks +12% synergy
Minamo, School at Water's Edge
16% of 31 decks +14% synergy
Mystic Sanctuary
16% of 31 decks +10% synergy
Castle Vantress
13% of 31 decks +11% synergy
Thespian's Stage
13% of 31 decks +10% synergy
Temple of the False God
13% of 31 decks +3% synergy
Ancient Tomb
13% of 31 decks +2% synergy
Access Tunnel
10% of 30 decks +8% synergy
Coral Atoll
10% of 31 decks +9% synergy
Dark Depths
10% of 31 decks +9% synergy
Lotus Field
10% of 31 decks +8% synergy
Rogue's Passage
10% of 31 decks -9% synergy
Mana Artifacts
Sol Ring
84% of 31 decks -1% synergy
Arcane Signet
52% of 31 decks -20% synergy
Basalt Monolith
35% of 31 decks +33% synergy
Thought Vessel
26% of 31 decks +9% synergy
Simic Signet
23% of 31 decks +19% synergy
Gilded Lotus
19% of 31 decks +16% synergy
Commander's Sphere
16% of 31 decks +0% synergy
Decanter of Endless Water
14% of 29 decks +9% synergy
Mox Amber
13% of 31 decks +9% synergy
Everflowing Chalice
13% of 31 decks +8% synergy
Mana Vault
13% of 31 decks +6% synergy
Chromatic Orrery
10% of 30 decks +8% synergy
Paradise Mantle
10% of 31 decks +9% synergy
Grim Monolith
10% of 31 decks +8% synergy
Talisman of Curiosity
10% of 31 decks +7% synergy
Thran Dynamo
10% of 31 decks +5% synergy
Chrome Mox
10% of 31 decks +3% synergy
Mana Crypt
10% of 31 decks -1% synergy
Fellwar Stone
10% of 31 decks -11% synergy
Lands
Overflowing Basin
71% of 7 decks +69% synergy
Hedge Maze
69% of 13 decks +66% synergy
Command Tower
61% of 31 decks -12% synergy
Ketria Triome
60% of 5 decks +56% synergy
Stomping Ground
60% of 5 decks +51% synergy
Hinterland Harbor
58% of 31 decks +52% synergy
Zagoth Triome
57% of 7 decks +54% synergy
Simic Growth Chamber
52% of 31 decks +47% synergy
Breeding Pool
52% of 31 decks +42% synergy
Dimir Aqueduct
43% of 7 decks +39% synergy
Overgrown Tomb
43% of 7 decks +34% synergy
Watery Grave
43% of 7 decks +33% synergy
Temple of Mystery
39% of 31 decks +35% synergy
Yavimaya Coast
39% of 31 decks +33% synergy
Dreamroot Cascade
37% of 30 decks +33% synergy
Rejuvenating Springs
37% of 30 decks +30% synergy
Flooded Grove
32% of 31 decks +30% synergy
Misty Rainforest
29% of 31 decks +17% synergy
Escape Tunnel
27% of 11 decks +25% synergy
Evolving Wilds
26% of 31 decks +5% synergy
Tangled Islet
24% of 29 decks +22% synergy
Vineglimmer Snarl
23% of 30 decks +21% synergy
Terramorphic Expanse
19% of 31 decks +4% synergy
Myriad Landscape
19% of 31 decks -1% synergy
Exotic Orchard
19% of 31 decks -16% synergy
Thornwood Falls
16% of 31 decks +14% synergy
Tropical Island
16% of 31 decks +13% synergy
Fabled Passage
13% of 31 decks +4% synergy
Rimewood Falls
10% of 30 decks +9% synergy
Barkchannel Pathway
10% of 30 decks +8% synergy
Polluted Delta
10% of 31 decks -1% synergy
Verdant Catacombs
10% of 31 decks -2% synergy