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
0.24% of 3690 decks 9 decks
The Pride of Hull Clade
0.22% of 2254 decks 5 decks
Kinnan, Bonder Prodigy
0.04% of 12318 decks 5 decks
Kydele, Chosen of Kruphix // Thrasios, Triton Hero
1.37% of 366 decks 5 decks
Kenrith, the Returned King
0.01% of 21730 decks 3 decks
Experiment Kraj
0.17% of 1174 decks 2 decks
Zaxara, the Exemplary
0.02% of 12001 decks 2 decks
Kenessos, Priest of Thassa
0.02% of 4156 decks 1 decks
Alena, Kessig Trapper // Thrasios, Triton Hero
1.41% of 71 decks 1 decks
Gretchen Titchwillow
0.11% of 884 decks 1 decks
Kodama of the East Tree // Thrasios, Triton Hero
0.39% of 254 decks 1 decks
Archelos, Lagoon Mystic
0.03% of 3405 decks 1 decks
High Synergy Cards
Freed from the Real
72% of 36 decks +70% synergy
Planar Genesis
67% of 9 decks +59% synergy
Pemmin's Aura
58% of 36 decks +57% synergy
Benthic Anomaly
57% of 7 decks +55% synergy
Biomancer's Familiar
56% of 36 decks +53% synergy
Gyre Engineer
47% of 36 decks +46% synergy
Kozilek's Unsealing
45% of 11 decks +43% synergy
Staff of Domination
44% of 36 decks +43% synergy
Kiora's Follower
39% of 36 decks +33% synergy
Kinnan, Bonder Prodigy
37% of 35 decks +33% synergy
Top Cards
Counterspell
58% of 36 decks +15% synergy
Rampant Growth
47% of 36 decks +13% synergy
Birds of Paradise
44% of 36 decks +17% synergy
Kodama's Reach
42% of 36 decks +10% synergy
Cultivate
42% of 36 decks -5% synergy
Fanatic of Rhonas
40% of 10 decks +31% synergy
Growth Spiral
39% of 36 decks +17% synergy
Beast Within
39% of 36 decks +0% synergy
Bloom Tender
36% of 36 decks +28% synergy
Nature's Lore
36% of 36 decks +4% synergy
Creatures
Zaxara, the Exemplary
50% of 6 decks +49% synergy
Koma, Cosmos Serpent
34% of 35 decks +29% synergy
Incubation Druid
33% of 36 decks +28% synergy
Hullbreaker Horror
31% of 35 decks +24% synergy
Seedborn Muse
31% of 36 decks +22% synergy
Voyaging Satyr
28% of 36 decks +27% synergy
Laboratory Maniac
28% of 36 decks +23% synergy
Xolatoyac, the Smiling Flood
26% of 19 decks +24% synergy
Vizier of Tumbling Sands
25% of 36 decks +24% synergy
Selvala, Heart of the Wilds
25% of 36 decks +20% synergy
Llanowar Elves
25% of 36 decks +4% synergy
Bedrock Tortoise
24% of 21 decks +23% synergy
Omen Hawker
23% of 30 decks +23% synergy
Spawning Kraken
23% of 35 decks +22% synergy
Aesi, Tyrant of Gyre Strait
23% of 35 decks +17% synergy
Nezahal, Primal Tide
22% of 36 decks +19% synergy
Nyxbloom Ancient
22% of 36 decks +18% synergy
Elvish Mystic
22% of 36 decks +4% synergy
Ioreth of the Healing House
20% of 25 decks +18% synergy
Ley Weaver
19% of 36 decks +19% synergy
Stormsurge Kraken
19% of 36 decks +19% synergy
Serpent of Yawning Depths
19% of 36 decks +19% synergy
Maraleaf Pixie
19% of 36 decks +18% synergy
Scourge of Fleets
19% of 36 decks +17% synergy
Ilysian Caryatid
19% of 36 decks +17% synergy
Gyre Sage
19% of 36 decks +16% synergy
Hydroid Krasis
19% of 36 decks +15% synergy
Arbor Elf
19% of 36 decks +13% synergy
Thassa's Oracle
19% of 36 decks +12% synergy
Tatyova, Benthic Druid
19% of 36 decks +7% synergy
Fyndhorn Elves
19% of 36 decks +6% synergy
Eternal Witness
19% of 36 decks -1% synergy
Kiora, Sovereign of the Deep
18% of 28 decks +17% synergy
The Pride of Hull Clade
18% of 17 decks +16% synergy
Kelpie Guide
17% of 35 decks +16% synergy
Charix, the Raging Isle
17% of 35 decks +16% synergy
Sanctum Weaver
17% of 35 decks +11% synergy
Krosan Restorer
17% of 36 decks +16% synergy
Slinn Voda, the Rising Deep
17% of 36 decks +16% synergy
Sylvan Caryatid
17% of 36 decks +15% synergy
Crashing Drawbridge
17% of 36 decks +15% synergy
Stormtide Leviathan
17% of 36 decks +15% synergy
Devoted Druid
17% of 36 decks +14% synergy
Lotus Cobra
17% of 36 decks +9% synergy
Walking Bulwark
15% of 34 decks +14% synergy
Hope Tender
14% of 36 decks +14% synergy
Knacksaw Clique
14% of 36 decks +14% synergy
Utopia Tree
14% of 36 decks +14% synergy
Vigean Graftmage
14% of 36 decks +14% synergy
Horseshoe Crab
14% of 36 decks +14% synergy
Instants
Pongify
31% of 36 decks +19% synergy
Cyclonic Rift
31% of 36 decks +3% synergy
Dramatic Reversal
28% of 36 decks +22% synergy
Mystical Tutor
28% of 36 decks +13% synergy
Negate
28% of 36 decks +5% synergy
Heroic Intervention
22% of 36 decks -7% synergy
Blue Sun's Zenith
19% of 36 decks +17% synergy
Worldly Tutor
19% of 36 decks +5% synergy
Arcane Denial
19% of 36 decks -0% synergy
Brainstorm
19% of 36 decks -2% synergy
An Offer You Can't Refuse
17% of 35 decks -4% synergy
Reality Shift
17% of 36 decks +8% synergy
Rapid Hybridization
17% of 36 decks +7% synergy
Fierce Guardianship
14% of 35 decks -4% synergy
Nature's Claim
14% of 36 decks +4% synergy
Force of Will
14% of 36 decks +3% synergy
Pull from Tomorrow
11% of 36 decks +8% synergy
Force of Negation
11% of 36 decks +2% synergy
Double Major
9% of 35 decks +5% synergy
Resculpt
9% of 35 decks +3% synergy
Unwind
8% of 36 decks +5% synergy
Simic Charm
8% of 36 decks +5% synergy
Spell Pierce
8% of 36 decks +5% synergy
Dispel
8% of 36 decks +4% synergy
Return to Nature
8% of 36 decks +2% synergy
Frantic Search
8% of 36 decks -4% synergy
Return of the Wildspeaker
8% of 36 decks -5% synergy
Mana Drain
8% of 36 decks -7% synergy
Swan Song
8% of 36 decks -8% synergy
Sorceries
Farseek
28% of 36 decks -6% synergy
Whelming Wave
25% of 36 decks +23% synergy
Finale of Devastation
19% of 36 decks +11% synergy
Three Visits
19% of 36 decks -5% synergy
Fabricate
17% of 36 decks +11% synergy
Rishkar's Expertise
17% of 36 decks +6% synergy
Ponder
17% of 36 decks +4% synergy
Traverse the Outlands
14% of 36 decks +11% synergy
Windfall
14% of 36 decks +1% synergy
Body of Research
11% of 35 decks +11% synergy
Urban Evolution
11% of 36 decks +7% synergy
Overwhelming Stampede
11% of 36 decks +5% synergy
Preordain
11% of 36 decks +0% synergy
Green Sun's Twilight
9% of 32 decks +8% synergy
Awaken the Woods
9% of 34 decks +5% synergy
Bala Ged Recovery
9% of 35 decks -0% synergy
Tunnel Vision
8% of 36 decks +8% synergy
Animist's Awakening
8% of 36 decks +7% synergy
Triumph of the Hordes
8% of 36 decks +5% synergy
Serum Visions
8% of 36 decks +4% synergy
Utility Artifacts
Lightning Greaves
31% of 36 decks +5% synergy
Swiftfoot Boots
28% of 36 decks -0% synergy
Isochron Scepter
22% of 36 decks +20% synergy
Thousand-Year Elixir
17% of 36 decks +15% synergy
Sensei's Divining Top
17% of 36 decks +11% synergy
Fireshrieker
14% of 36 decks +12% synergy
Rings of Brighthearth
14% of 36 decks +12% synergy
Agatha's Soul Cauldron
12% of 24 decks +11% synergy
Heartstone
11% of 36 decks +11% synergy
Grafted Exoskeleton
11% of 36 decks +10% synergy
Conduit of Worlds
9% of 32 decks +3% synergy
Sword of the Paruns
8% of 36 decks +8% synergy
Kefnet's Monument
8% of 36 decks +8% synergy
Venser's Journal
8% of 36 decks +7% synergy
Illusionist's Bracers
8% of 36 decks +7% synergy
Wayfarer's Bauble
8% of 36 decks -2% synergy
Enchantments
Monstrous Vortex
43% of 7 decks +40% synergy
Garruk's Uprising
23% of 35 decks +7% synergy
Utopia Sprawl
22% of 36 decks +15% synergy
Mystic Remora
22% of 36 decks +4% synergy
Ominous Seas
20% of 35 decks +17% synergy
Rhystic Study
19% of 36 decks -8% synergy
Intruder Alarm
17% of 36 decks +15% synergy
Leyline of Anticipation
17% of 36 decks +12% synergy
Wizard Class
14% of 35 decks +10% synergy
Mana Reflection
14% of 36 decks +12% synergy
Cryptolith Rite
14% of 36 decks +10% synergy
Fertile Ground
14% of 36 decks +10% synergy
Elven Chorus
12% of 25 decks +7% synergy
Teferi's Ageless Insight
11% of 35 decks +6% synergy
Retreat to Coralhelm
11% of 36 decks +9% synergy
Simic Ascendancy
11% of 36 decks +6% synergy
Guardian Project
11% of 36 decks +3% synergy
Wild Growth
11% of 36 decks +0% synergy
Unnatural Growth
9% of 35 decks +3% synergy
Treefolk Umbra
8% of 36 decks +8% synergy
Quest for Ula's Temple
8% of 36 decks +8% synergy
Burgeoning
8% of 36 decks +5% synergy
Aqueous Form
8% of 36 decks +4% synergy
Greater Good
8% of 36 decks +3% synergy
Exploration
8% of 36 decks -0% synergy
Sylvan Library
8% of 36 decks -3% synergy
Planeswalkers
Jace, Wielder of Mysteries
22% of 36 decks +19% synergy
Kiora, Behemoth Beckoner
19% of 36 decks +16% synergy
Kiora, Master of the Depths
14% of 36 decks +13% synergy
Teferi, Temporal Pilgrim
9% of 34 decks +7% synergy
Narset, Parter of Veils
8% of 36 decks +3% synergy
Utility Lands
Reliquary Tower
50% of 36 decks +20% synergy
Alchemist's Refuge
31% of 36 decks +24% synergy
Yavimaya, Cradle of Growth
29% of 35 decks +19% synergy
Boseiju, Who Endures
29% of 35 decks +9% synergy
Shifting Woodland
27% of 11 decks +18% synergy
Otawara, Soaring City
20% of 35 decks +3% synergy
Thespian's Stage
17% of 36 decks +14% synergy
Temple of the False God
17% of 36 decks +7% synergy
Minamo, School at Water's Edge
14% of 36 decks +10% synergy
Mystic Sanctuary
14% of 36 decks +2% synergy
Rogue's Passage
14% of 36 decks -6% synergy
Access Tunnel
11% of 35 decks +9% synergy
Coral Atoll
11% of 36 decks +10% synergy
Lotus Field
11% of 36 decks +10% synergy
Castle Vantress
11% of 36 decks +7% synergy
Ancient Tomb
11% of 36 decks +1% synergy
Dark Depths
8% of 36 decks +7% synergy
Mana Artifacts
Sol Ring
86% of 36 decks +2% synergy
Arcane Signet
47% of 36 decks -25% synergy
Basalt Monolith
33% of 36 decks +31% synergy
Thought Vessel
25% of 36 decks +8% synergy
Simic Signet
22% of 36 decks +8% synergy
Decanter of Endless Water
15% of 34 decks +10% synergy
Gilded Lotus
14% of 36 decks +10% synergy
Mana Vault
14% of 36 decks +8% synergy
Chromatic Orrery
11% of 35 decks +10% synergy
Mox Amber
11% of 36 decks +7% synergy
Everflowing Chalice
11% of 36 decks +6% synergy
Talisman of Curiosity
11% of 36 decks -1% synergy
Fellwar Stone
11% of 36 decks -10% synergy
Machine God's Effigy
9% of 34 decks +7% synergy
Paradise Mantle
8% of 36 decks +8% synergy
Grim Monolith
8% of 36 decks +6% synergy
Chrome Mox
8% of 36 decks +2% synergy
Mana Crypt
8% of 36 decks -0% synergy
Commander's Sphere
8% of 36 decks -7% synergy
Lands
Command Tower
67% of 36 decks -7% synergy
Hinterland Harbor
61% of 36 decks +34% synergy
Hedge Maze
58% of 19 decks +44% synergy
Breeding Pool
56% of 36 decks +15% synergy
Overflowing Basin
50% of 12 decks +40% synergy
Dimir Aqueduct
50% of 6 decks +33% synergy
Zagoth Triome
50% of 6 decks +19% synergy
Watery Grave
50% of 6 decks +9% synergy
Simic Growth Chamber
47% of 36 decks +27% synergy
Rejuvenating Springs
43% of 35 decks +14% synergy
Yavimaya Coast
42% of 36 decks +15% synergy
Flooded Grove
39% of 36 decks +27% synergy
Dreamroot Cascade
37% of 35 decks +18% synergy
Temple of Mystery
36% of 36 decks +19% synergy
Vineglimmer Snarl
29% of 35 decks +18% synergy
Misty Rainforest
28% of 36 decks +16% synergy
Escape Tunnel
24% of 17 decks +22% synergy
Tangled Islet
24% of 34 decks +16% synergy
Evolving Wilds
22% of 36 decks +1% synergy
Exotic Orchard
22% of 36 decks -13% synergy
Thornwood Falls
19% of 36 decks +12% synergy
Myriad Landscape
19% of 36 decks -0% synergy
Fabled Passage
17% of 36 decks +8% synergy
Tropical Island
17% of 36 decks +2% synergy
Terramorphic Expanse
17% of 36 decks +1% synergy
Polluted Delta
11% of 36 decks -0% synergy
Verdant Catacombs
11% of 36 decks -0% synergy
Rimewood Falls
9% of 35 decks +4% synergy
Barkchannel Pathway
9% of 35 decks -0% synergy
Botanical Sanctum
8% of 36 decks +4% synergy
Waterlogged Grove
8% of 36 decks +1% synergy
Windswept Heath
8% of 36 decks -2% synergy