Roon of the Hidden Realm + Eternal Witness + Walk the Aeons
Roon of the Hidden Realm
Eternal Witness
Walk the Aeons
Requires
Roon of the Hidden Realm must be on the battlefield.
Eternal Witness must be on the battlefield.
Walk the Aeons must be in hand.
Roon does not have summoning sickness.
Mana needed: 
each turn
each turn
Steps
- Cast Walk the Aeons by paying
, causing you to take an extra turn after this one. - Activate Roon by paying
and tapping it, exiling Eternal Witness until the beginning of your end step. - At the beginning of your end step, Roon triggers, returning Eternal Witness from exile to the battlefield.
- Eternal Witness enters the battlefield, putting Walk the Aeons into your hand from your graveyard.
- Repeat each turn.
Results
Infinite turns.
Roon of the Hidden Realm
1.55% of 3233 decks
50 decks
Atraxa, Grand Unifier
0.01% of 14209 decks
2 decks
Chulane, Teller of Tales
0.01% of 7344 decks
1 decks
Derevi, Empyrial Tactician
0.01% of 7409 decks
1 decks
Lagrella, the Magpie
0.06% of 1599 decks
1 decks
High Synergy Cards
Soulherder
84% of 55 decks
+78% synergy
Coiling Oracle
78% of 55 decks
+70% synergy
Panharmonicon
71% of 55 decks
+67% synergy
Archaeomancer
69% of 55 decks
+65% synergy
Peregrine Drake
65% of 55 decks
+62% synergy
Farhaven Elf
64% of 55 decks
+60% synergy
Mulldrifter
65% of 55 decks
+60% synergy
Ephemerate
62% of 55 decks
+56% synergy
Brago, King Eternal
58% of 55 decks
+55% synergy
Aether Channeler
55% of 42 decks
+52% synergy
Top Cards
Swords to Plowshares
71% of 55 decks
+8% synergy
Eerie Interlude
56% of 55 decks
+52% synergy
Wood Elves
56% of 55 decks
+49% synergy
Emiel the Blessed
56% of 54 decks
+52% synergy
Knight of Autumn
47% of 55 decks
+45% synergy
Cloudblazer
47% of 55 decks
+44% synergy
Teleportation Circle
46% of 54 decks
+42% synergy
Another Round
45% of 11 decks
+44% synergy
Conjurer's Closet
45% of 55 decks
+43% synergy
Yorion, Sky Nomad
45% of 55 decks
+43% synergy
Creatures
Venser, Shaper Savant
44% of 55 decks
+42% synergy
Reclamation Sage
42% of 55 decks
+31% synergy
Deadeye Navigator
40% of 55 decks
+38% synergy
Wall of Omens
38% of 55 decks
+35% synergy
Skyclave Apparition
35% of 54 decks
+32% synergy
Mistmeadow Witch
35% of 55 decks
+34% synergy
Sun Titan
35% of 55 decks
+24% synergy
Preston, the Vanisher
33% of 33 decks
+32% synergy
Stonehorn Dignitary
33% of 55 decks
+32% synergy
Eldrazi Displacer
33% of 55 decks
+31% synergy
Felidar Guardian
33% of 55 decks
+30% synergy
Acidic Slime
33% of 55 decks
+29% synergy
Solemn Simulacrum
33% of 55 decks
+19% synergy
Birds of Paradise
33% of 55 decks
+6% synergy
Wall of Blossoms
31% of 55 decks
+29% synergy
Reflector Mage
31% of 55 decks
+29% synergy
Karmic Guide
31% of 55 decks
+26% synergy
Flickerwisp
29% of 55 decks
+27% synergy
Thassa, Deep-Dwelling
29% of 55 decks
+26% synergy
Avacyn's Pilgrim
27% of 55 decks
+12% synergy
Timeless Witness
26% of 54 decks
+23% synergy
Lavinia of the Tenth
25% of 55 decks
+25% synergy
Mystic Snake
25% of 55 decks
+24% synergy
Reveillark
25% of 55 decks
+24% synergy
Restoration Angel
25% of 55 decks
+23% synergy
Llanowar Elves
25% of 55 decks
+5% synergy
Gruff Triplets
25% of 16 decks
+23% synergy
Elesh Norn, Mother of Machines
25% of 28 decks
+20% synergy
Displacer Kitten
24% of 50 decks
+18% synergy
Thragtusk
24% of 55 decks
+23% synergy
Agent of Treachery
24% of 55 decks
+22% synergy
Hornet Queen
24% of 55 decks
+21% synergy
Kiora's Follower
24% of 55 decks
+18% synergy
Noble Hierarch
24% of 55 decks
+8% synergy
Spirited Companion
23% of 52 decks
+19% synergy
Elvish Visionary
22% of 55 decks
+20% synergy
Seedborn Muse
22% of 55 decks
+14% synergy
Avenger of Zendikar
22% of 55 decks
+12% synergy
Terastodon
20% of 55 decks
+17% synergy
Charming Prince
18% of 55 decks
+16% synergy
Progenitor Mimic
18% of 55 decks
+16% synergy
Prime Speaker Zegana
18% of 55 decks
+15% synergy
Recruiter of the Guard
18% of 55 decks
+15% synergy
Elvish Mystic
18% of 55 decks
+0% synergy
Gilraen, Dúnedain Protector
17% of 18 decks
+16% synergy
Mnemonic Wall
16% of 55 decks
+16% synergy
Arbor Elf
16% of 55 decks
+10% synergy
Fyndhorn Elves
16% of 55 decks
+3% synergy
Llanowar Visionary
15% of 54 decks
+13% synergy
Perplexing Chimera
15% of 55 decks
+14% synergy
Instants
Ghostly Flicker
42% of 55 decks
+37% synergy
Momentary Blink
40% of 55 decks
+37% synergy
Counterspell
40% of 55 decks
-3% synergy
Negate
38% of 55 decks
+15% synergy
Beast Within
36% of 55 decks
-3% synergy
Cloudshift
33% of 55 decks
+30% synergy
Eladamri's Call
33% of 55 decks
+21% synergy
Path to Exile
33% of 55 decks
-13% synergy
Dovin's Veto
29% of 55 decks
+10% synergy
Nature's Claim
25% of 55 decks
+16% synergy
Generous Gift
25% of 55 decks
-0% synergy
Mystical Tutor
24% of 55 decks
+9% synergy
Lae'zel's Acrobatics
22% of 50 decks
+20% synergy
Worldly Tutor
22% of 55 decks
+8% synergy
Cyclonic Rift
22% of 55 decks
-6% synergy
Arcane Denial
18% of 55 decks
-1% synergy
Swan Song
16% of 55 decks
-0% synergy
Semester's End
15% of 54 decks
+13% synergy
Displace
15% of 55 decks
+13% synergy
Fierce Guardianship
15% of 55 decks
-3% synergy
Growth Spiral
15% of 55 decks
-7% synergy
Heroic Intervention
15% of 55 decks
-15% synergy
Slip On the Ring
14% of 21 decks
+13% synergy
Essence Flux
13% of 55 decks
+11% synergy
Brainstorm
13% of 55 decks
-9% synergy
An Offer You Can't Refuse
12% of 52 decks
-9% synergy
Enlightened Tutor
11% of 55 decks
-7% synergy
Turn to Mist
9% of 55 decks
+9% synergy
Ghostway
9% of 55 decks
+8% synergy
Shared Summons
9% of 55 decks
+8% synergy
Mana Drain
9% of 55 decks
-6% synergy
Teferi's Protection
9% of 55 decks
-11% synergy
Cosmic Intervention
7% of 54 decks
+6% synergy
Voidslime
7% of 55 decks
+5% synergy
Blue Sun's Zenith
7% of 55 decks
+4% synergy
Delay
7% of 55 decks
+4% synergy
Spell Pierce
7% of 55 decks
+3% synergy
Veil of Summer
7% of 55 decks
+1% synergy
Fact or Fiction
7% of 55 decks
+0% synergy
Force of Will
7% of 55 decks
-4% synergy
Sejiri Shelter
6% of 54 decks
+2% synergy
Flicker of Fate
5% of 55 decks
+4% synergy
Mana Leak
5% of 55 decks
+3% synergy
Bant Charm
5% of 55 decks
+1% synergy
Dig Through Time
5% of 55 decks
+0% synergy
Return to Nature
5% of 55 decks
-1% synergy
Krosan Grip
5% of 55 decks
-2% synergy
Force of Negation
5% of 55 decks
-4% synergy
Crop Rotation
5% of 55 decks
-4% synergy
Sorceries
Farseek
38% of 55 decks
+4% synergy
Cultivate
38% of 55 decks
-8% synergy
Rampant Growth
36% of 55 decks
+2% synergy
Time Warp
35% of 55 decks
+32% synergy
Nature's Lore
33% of 55 decks
+1% synergy
Austere Command
24% of 55 decks
+11% synergy
Kodama's Reach
24% of 55 decks
-8% synergy
Time Wipe
22% of 55 decks
+15% synergy
Neoform
18% of 55 decks
+13% synergy
Three Visits
16% of 55 decks
-8% synergy
Temporal Manipulation
15% of 55 decks
+13% synergy
Tooth and Nail
15% of 55 decks
+13% synergy
Farewell
12% of 52 decks
-2% synergy
Capture of Jingzhou
11% of 55 decks
+10% synergy
Cleansing Nova
11% of 55 decks
+7% synergy
Supreme Verdict
11% of 55 decks
-3% synergy
Bala Ged Recovery
9% of 54 decks
+0% synergy
Wargate
9% of 55 decks
+6% synergy
Green Sun's Zenith
9% of 55 decks
+3% synergy
Solve the Equation
7% of 54 decks
+3% synergy
Confiscation Coup
7% of 55 decks
+7% synergy
Eldritch Evolution
7% of 55 decks
+3% synergy
Ponder
7% of 55 decks
-6% synergy
Consuming Tide
6% of 53 decks
+5% synergy
Gaea's Blessing
5% of 55 decks
+5% synergy
Time Stretch
5% of 55 decks
+4% synergy
Winds of Abandon
5% of 55 decks
+3% synergy
Rite of Replication
5% of 55 decks
+2% synergy
Regrowth
5% of 55 decks
+2% synergy
Approach of the Second Sun
5% of 55 decks
+2% synergy
Finale of Devastation
5% of 55 decks
-3% synergy
Skyshroud Claim
5% of 55 decks
-4% synergy
Preordain
5% of 55 decks
-6% synergy
Windfall
5% of 55 decks
-8% synergy
Utility Artifacts
Swiftfoot Boots
31% of 55 decks
+3% synergy
Sword of Hearth and Home
24% of 54 decks
+22% synergy
Lightning Greaves
18% of 55 decks
-7% synergy
Strionic Resonator
15% of 55 decks
+11% synergy
Isochron Scepter
11% of 55 decks
+8% synergy
Golden Argosy
10% of 42 decks
+9% synergy
Decoction Module
7% of 55 decks
+7% synergy
Aetherworks Marvel
7% of 55 decks
+7% synergy
Lithoform Engine
6% of 54 decks
+4% synergy
Vedalken Orrery
5% of 55 decks
+4% synergy
Altar of Dementia
5% of 55 decks
+3% synergy
Sensei's Divining Top
5% of 55 decks
-0% synergy
Enchantments
Virtue of Knowledge
35% of 17 decks
+32% synergy
Aura Shards
22% of 55 decks
+13% synergy
Guardian Project
20% of 55 decks
+11% synergy
Wild Growth
16% of 55 decks
+5% synergy
Aid from the Cowl
15% of 55 decks
+14% synergy
Wilderness Reclamation
13% of 55 decks
+9% synergy
Sylvan Library
13% of 55 decks
+1% synergy
Rhystic Study
13% of 55 decks
-15% synergy
Freed from the Real
11% of 55 decks
+9% synergy
Mystic Remora
11% of 55 decks
-7% synergy
Smothering Tithe
11% of 55 decks
-14% synergy
Intruder Alarm
9% of 55 decks
+7% synergy
Utopia Sprawl
9% of 55 decks
+1% synergy
Call for Unity
7% of 55 decks
+7% synergy
Leyline of Anticipation
7% of 55 decks
+3% synergy
Mirari's Wake
7% of 55 decks
-7% synergy
Touch the Spirit Realm
6% of 52 decks
+4% synergy
Consulate Surveillance
5% of 55 decks
+5% synergy
Deafening Silence
5% of 55 decks
+3% synergy
Training Grounds
5% of 55 decks
+3% synergy
Fertile Ground
5% of 55 decks
+1% synergy
Planeswalkers
The Eternal Wanderer
24% of 25 decks
+20% synergy
Venser, the Sojourner
9% of 55 decks
+7% synergy
Vivien, Champion of the Wilds
9% of 55 decks
+7% synergy
Utility Lands
Reliquary Tower
35% of 55 decks
+5% synergy
Alchemist's Refuge
25% of 55 decks
+19% synergy
Yavimaya, Cradle of Growth
17% of 54 decks
+7% synergy
Temple of the False God
15% of 55 decks
+5% synergy
Mystic Sanctuary
13% of 55 decks
+0% synergy
Minamo, School at Water's Edge
9% of 55 decks
+5% synergy
Otawara, Soaring City
6% of 52 decks
-11% synergy
Maze of Ith
5% of 55 decks
+3% synergy
Rogue's Passage
5% of 55 decks
-14% synergy
Mana Artifacts
Sol Ring
91% of 55 decks
+6% synergy
Arcane Signet
89% of 55 decks
+17% synergy
Simic Signet
40% of 55 decks
+25% synergy
Azorius Signet
40% of 55 decks
+14% synergy
Selesnya Signet
38% of 55 decks
+29% synergy
Fellwar Stone
31% of 55 decks
+10% synergy
Talisman of Curiosity
16% of 55 decks
+4% synergy
Thought Vessel
13% of 55 decks
-4% synergy
Talisman of Unity
11% of 55 decks
+4% synergy
Chromatic Lantern
11% of 55 decks
+1% synergy
Talisman of Progress
11% of 55 decks
-12% synergy
Gilded Lotus
9% of 55 decks
+6% synergy
Commander's Sphere
9% of 55 decks
-6% synergy
Liquimetal Torque
7% of 54 decks
+4% synergy
Mana Crypt
7% of 55 decks
-2% synergy
Mind Stone
7% of 55 decks
-10% synergy
Patriar's Seal
6% of 50 decks
+4% synergy
Decanter of Endless Water
6% of 50 decks
+1% synergy
Lands
Command Tower
100% of 55 decks
+26% synergy
Prairie Stream
64% of 55 decks
+30% synergy
Canopy Vista
64% of 55 decks
+28% synergy
Exotic Orchard
58% of 55 decks
+23% synergy
Temple Garden
51% of 55 decks
+10% synergy
Tranquil Landscape
50% of 6 decks
+33% synergy
Hallowed Fountain
49% of 55 decks
+8% synergy
Seaside Citadel
47% of 55 decks
+21% synergy
Breeding Pool
47% of 55 decks
+6% synergy
Yavimaya Coast
44% of 55 decks
+17% synergy
Misty Rainforest
42% of 55 decks
+30% synergy
Windswept Heath
40% of 55 decks
+30% synergy
Sunpetal Grove
35% of 55 decks
+11% synergy
Rejuvenating Springs
31% of 54 decks
+3% synergy
Simic Growth Chamber
31% of 55 decks
+11% synergy
Hinterland Harbor
31% of 55 decks
+4% synergy
Spara's Headquarters
31% of 52 decks
-1% synergy
Flooded Strand
29% of 55 decks
+19% synergy
Selesnya Sanctuary
29% of 55 decks
+15% synergy
Azorius Chancery
29% of 55 decks
+14% synergy
Glacial Fortress
29% of 55 decks
+4% synergy
Fortified Village
27% of 55 decks
+12% synergy
Sea of Clouds
27% of 55 decks
+1% synergy
Port Town
25% of 55 decks
+10% synergy
Dreamroot Cascade
25% of 53 decks
+6% synergy
Verdant Catacombs
24% of 55 decks
+12% synergy
Temple of Plenty
24% of 55 decks
+11% synergy
Bountiful Promenade
24% of 55 decks
-1% synergy
Overgrown Farmland
23% of 53 decks
+7% synergy
Terramorphic Expanse
22% of 55 decks
+6% synergy
Brushland
22% of 55 decks
+6% synergy
Temple of Enlightenment
22% of 55 decks
+5% synergy
Adarkar Wastes
22% of 55 decks
+5% synergy
Temple of Mystery
22% of 55 decks
+4% synergy
Meticulous Archive
21% of 14 decks
+11% synergy
Vineglimmer Snarl
20% of 54 decks
+10% synergy
Arid Mesa
20% of 55 decks
+9% synergy
Evolving Wilds
20% of 55 decks
-1% synergy
Marsh Flats
18% of 55 decks
+7% synergy
Irrigated Farmland
16% of 55 decks
+9% synergy
Fabled Passage
15% of 55 decks
+5% synergy
Scalding Tarn
15% of 55 decks
+4% synergy
Sungrass Prairie
15% of 55 decks
+3% synergy
Skycloud Expanse
15% of 55 decks
+2% synergy
Barkchannel Pathway
13% of 54 decks
+4% synergy
Deserted Beach
11% of 53 decks
-5% synergy
Hengegate Pathway
11% of 54 decks
+4% synergy
Scattered Groves
11% of 55 decks
+3% synergy
Idyllic Beachfront
10% of 42 decks
+6% synergy
Tangled Islet
10% of 42 decks
+2% synergy