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: 6 each turn
Steps
  1. Cast Time Warp by paying 3, taking an extra turn after this one.
  2. Cast Mnemonic Wall by paying 4.
  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.

Azami, Lady of Scrolls
0.06% of 3618 decks 2 decks
Padeem, Consul of Innovation
0.33% of 304 decks 1 decks
Maelstrom Wanderer
0.02% of 5929 decks 1 decks
The Unspeakable
2.00% of 50 decks 1 decks
Noyan Dar, Roil Shaper
0.08% of 1235 decks 1 decks
Alirios, Enraptured
1.02% of 98 decks 1 decks
Kenrith, the Returned King
0.00% of 21933 decks 1 decks
Kess, Dissident Mage
0.01% of 7183 decks 1 decks
Etrata, Deadly Fugitive
0.05% of 2097 decks 1 decks
Rowan Kenrith // Will Kenrith
0.11% of 892 decks 1 decks
Marvo, Deep Operative
0.03% of 3055 decks 1 decks
High Synergy Cards
Archaeomancer
91% of 11 decks +87% synergy
Crystal Shard
75% of 12 decks +74% synergy
Walk the Aeons
58% of 12 decks +58% synergy
Temporal Manipulation
58% of 12 decks +57% synergy
Thassa, Deep-Dwelling
55% of 11 decks +51% synergy
Time Stretch
50% of 12 decks +49% synergy
Capture of Jingzhou
42% of 12 decks +41% synergy
Salvager of Secrets
36% of 11 decks +36% synergy
Mystic Sanctuary
45% of 11 decks +33% synergy
Remote Isle
33% of 12 decks +32% synergy
Top Cards
Gilded Lotus
50% of 12 decks +47% synergy
Ponder
42% of 12 decks +29% synergy
Brainstorm
42% of 12 decks +21% synergy
Counterspell
42% of 12 decks -1% synergy
Temporal Mastery
33% of 12 decks +32% synergy
Conjurer's Closet
33% of 12 decks +31% synergy
Venser, Shaper Savant
33% of 12 decks +31% synergy
Deadeye Navigator
33% of 12 decks +31% synergy
Thran Dynamo
33% of 12 decks +29% synergy
Preordain
33% of 12 decks +23% synergy
Creatures
Displacer Kitten
43% of 7 decks +37% synergy
Phantom Steed
33% of 9 decks +33% synergy
Scholar of the Ages
27% of 11 decks +27% synergy
Cache Raiders
25% of 12 decks +25% synergy
Great Whale
25% of 12 decks +25% synergy
Palinchron
25% of 12 decks +25% synergy
Willbender
25% of 12 decks +25% synergy
Trinket Mage
25% of 12 decks +23% synergy
Peregrine Drake
25% of 12 decks +22% synergy
Laboratory Maniac
25% of 12 decks +20% synergy
Instants
Mystical Tutor
33% of 12 decks +18% synergy
Arcane Denial
33% of 12 decks +14% synergy
Nexus of Fate
27% of 11 decks +26% synergy
Cyclonic Rift
27% of 11 decks -0% synergy
Time Stop
25% of 12 decks +25% synergy
High Tide
25% of 12 decks +21% synergy
Ghostly Flicker
25% of 12 decks +20% synergy
Negate
25% of 12 decks +2% synergy
Sorceries
Treasure Cruise
27% of 11 decks +22% synergy
Personal Tutor
25% of 12 decks +24% synergy
Rite of Replication
25% of 12 decks +22% synergy
Utility Artifacts
Panharmonicon
27% of 11 decks +23% synergy
Enchantments
Followed Footsteps
25% of 12 decks +25% synergy
Mystic Remora
25% of 12 decks +7% synergy
Utility Lands
Reliquary Tower
58% of 12 decks +29% synergy
Temple of the False God
33% of 12 decks +24% synergy
Desert of the Mindful
27% of 11 decks +26% synergy
Castle Vantress
27% of 11 decks +23% synergy
Terrain Generator
25% of 12 decks +24% synergy
Halimar Depths
25% of 12 decks +22% synergy
Lonely Sandbar
25% of 12 decks +22% synergy
Mana Artifacts
Sol Ring
83% of 12 decks -1% synergy
Arcane Signet
64% of 11 decks -9% synergy
Thought Vessel
36% of 11 decks +19% synergy
Mind Stone
33% of 12 decks +16% synergy
Caged Sun
25% of 12 decks +23% synergy
Worn Powerstone
25% of 12 decks +22% synergy
Basalt Monolith
25% of 12 decks +22% synergy
Lands
Command Tower
50% of 12 decks -24% synergy
Myriad Landscape
36% of 11 decks +17% synergy