Mnemonic Wall + Erratic Portal + Time Warp

Mnemonic Wall
Erratic Portal
Time Warp

Requires
Mnemonic Wall must be in hand. Erratic Portal must be on the battlefield. Time Warp must be in hand. Mana needed: 6uuuu each turn
Steps
  1. Cast Time Warp by paying 3uu, taking an extra turn after this one.
  2. Cast Mnemonic Wall by paying 4u.
  3. Mnemonic Wall enters the battlefield, returning Time Warp from your graveyard to your hand.
  4. Activate Erratic Portal by paying 1 and tapping it, returning Mnemonic Wall from the battlefield to your hand.
  5. Repeat each turn.
Results
Infinite turns.

Top Commanders (1)
Ranar the Ever-Watchful
0.08% of 3803 decks 3 decks
High Synergy Cards (6)
Archaeomancer
94% of 16 decks +92% synergy
Eternal Witness
100% of 5 decks +90% synergy
Brago, King Eternal
86% of 7 decks +85% synergy
Soulherder
86% of 7 decks +84% synergy
Temporal Manipulation
69% of 16 decks +68% synergy
Walk the Aeons
62% of 16 decks +62% synergy
Top Cards (10)
Crystal Shard
69% of 16 decks +68% synergy
Conjurer's Closet
62% of 16 decks +60% synergy
Teleportation Circle
57% of 7 decks +55% synergy
Ephemerate
57% of 7 decks +54% synergy
Deadeye Navigator
56% of 16 decks +55% synergy
Followed Footsteps
50% of 16 decks +50% synergy
Time Stretch
50% of 16 decks +49% synergy
Peregrine Drake
50% of 16 decks +48% synergy
Displacer Kitten
50% of 8 decks +47% synergy
Counterspell
44% of 16 decks +23% synergy
Creatures (18)
Progenitor Mimic
60% of 5 decks +59% synergy
Bloom Tender
60% of 5 decks +56% synergy
Felidar Guardian
43% of 7 decks +42% synergy
Hullbreaker Horror
38% of 13 decks +35% synergy
Salvager of Secrets
38% of 16 decks +37% synergy
Aether Channeler
38% of 8 decks +36% synergy
Venser, Shaper Savant
38% of 16 decks +36% synergy
Agent of Treachery
31% of 16 decks +30% synergy
Thassa, Deep-Dwelling
31% of 16 decks +30% synergy
Mulldrifter
31% of 16 decks +28% synergy
Cache Raiders
25% of 16 decks +25% synergy
Scholar of the Ages
25% of 16 decks +25% synergy
Phyrexian Metamorph
25% of 16 decks +22% synergy
Palinchron
19% of 16 decks +19% synergy
Man-o'-War
19% of 16 decks +18% synergy
Diluvian Primordial
19% of 16 decks +18% synergy
Clever Impersonator
19% of 16 decks +17% synergy
Solemn Simulacrum
19% of 16 decks +4% synergy
Instants (12)
Momentary Blink
43% of 7 decks +42% synergy
Cloudshift
43% of 7 decks +42% synergy
Eerie Interlude
43% of 7 decks +41% synergy
Swords to Plowshares
43% of 7 decks +14% synergy
Ghostly Flicker
38% of 16 decks +35% synergy
Nexus of Fate
25% of 16 decks +24% synergy
Narset's Reversal
25% of 16 decks +23% synergy
Mystical Tutor
25% of 16 decks +17% synergy
Cyclonic Rift
25% of 16 decks +11% synergy
Displace
19% of 16 decks +18% synergy
Arcane Denial
19% of 16 decks +9% synergy
Brainstorm
19% of 16 decks +7% synergy
Sorceries (12)
Capture of Jingzhou
38% of 16 decks +37% synergy
Ponder
38% of 16 decks +31% synergy
Part the Waterveil
31% of 16 decks +31% synergy
Temporal Mastery
31% of 16 decks +30% synergy
Preordain
31% of 16 decks +25% synergy
Alrund's Epiphany
27% of 15 decks +26% synergy
Beacon of Tomorrows
25% of 16 decks +25% synergy
Karn's Temporal Sundering
25% of 16 decks +24% synergy
Expropriate
25% of 16 decks +24% synergy
Solve the Equation
20% of 15 decks +17% synergy
Temporal Trespass
19% of 16 decks +18% synergy
Treasure Cruise
19% of 16 decks +16% synergy
Utility Artifacts (7)
Lightning Greaves
44% of 16 decks +18% synergy
Swiftfoot Boots
31% of 16 decks +3% synergy
Panharmonicon
25% of 16 decks +21% synergy
Sword of Hearth and Home
21% of 14 decks +19% synergy
Altar of the Brood
19% of 16 decks +17% synergy
Isochron Scepter
19% of 16 decks +16% synergy
Whispersilk Cloak
19% of 16 decks +15% synergy
Enchantments (4)
Rhystic Study
31% of 16 decks +17% synergy
Swarm Intelligence
19% of 16 decks +18% synergy
Freed from the Real
19% of 16 decks +18% synergy
Mystic Remora
19% of 16 decks +10% synergy
Utility Lands (4)
Reliquary Tower
44% of 16 decks +15% synergy
Mystic Sanctuary
31% of 16 decks +25% synergy
Riptide Laboratory
19% of 16 decks +18% synergy
Temple of the False God
19% of 16 decks +9% synergy
Mana Artifacts (5)
Sol Ring
88% of 16 decks +3% synergy
Arcane Signet
44% of 16 decks -27% synergy
Thought Vessel
25% of 16 decks +9% synergy
Mana Crypt
19% of 16 decks +7% synergy
Commander's Sphere
19% of 16 decks +2% synergy
Lands (12)
Selesnya Sanctuary
100% of 3 decks +97% synergy
Simic Growth Chamber
80% of 5 decks +76% synergy
Command Tower
62% of 16 decks -11% synergy
Azorius Chancery
57% of 7 decks +54% synergy
Prairie Stream
57% of 7 decks +50% synergy
Hallowed Fountain
57% of 7 decks +48% synergy
Port Town
43% of 7 decks +39% synergy
Glacial Fortress
43% of 7 decks +38% synergy
Sea of Clouds
43% of 7 decks +37% synergy
Exotic Orchard
31% of 16 decks -3% synergy
Flooded Strand
19% of 16 decks +9% synergy
Myriad Landscape
19% of 16 decks -2% synergy