Heidar, Rimewind Master + Parallax Tide + Retreat to Coralhelm + High Tide

Heidar, Rimewind Master
Parallax Tide
Retreat to Coralhelm
High Tide

Requires
Heidar, Rimewind Master must be on the battlefield. Parallax Tide must be in hand. Retreat to Coralhelm must be on the battlefield. High Tide must be in hand. Mana needed:
Steps
  1. Cast High Tide by paying .
  2. Activate four Islands by tapping them, adding .
  3. High Tide triggers, adding .
  4. Cast Parallax Tide by paying 2.
  5. Activate Parallax Tide four times by removing four fade counters from it, exiling the four tapped Islands.
  6. Activate Heidar by paying 2 and tapping it, returning Parallax Tide from the battlefield to your hand.
  7. When Parallax Tide leaves the battlefield, it triggers, returning all cards exiled with it to the battlefield.
  8. When the Islands enter the battlefield, Retreat to Coralhelm triggers four times, untapping Heidar, and allowing you to untap up to three other creatures you control and/or scry 1 up to three times.
  9. Repeat from step 2.
Results
Infinite blinking of lands you control. Infinite landfall triggers. Infinite mana basic lands you control can produce. Infinite mana creatures you control can produce. Infinite scry 1. Infinite storm count. Infinite untap of creatures you control.

Heidar, Rimewind Master
8.70% of 69 decks 6 decks
Cosima, God of the Voyage
0.20% of 978 decks 2 decks
Tekuthal, Inquiry Dominus
0.05% of 2169 decks 1 decks
Patron of the Moon
0.08% of 1208 decks 1 decks
Isu the Abominable
0.04% of 2284 decks 1 decks
High Synergy Cards
Burnished Hart
64% of 11 decks +60% synergy
Rimewind Taskmage
55% of 11 decks +54% synergy
Mystic Sanctuary
64% of 11 decks +52% synergy
Muddle the Mixture
55% of 11 decks +50% synergy
Scrying Sheets
45% of 11 decks +45% synergy
Wayfarer's Bauble
55% of 11 decks +45% synergy
Marit Lage's Slumber
45% of 11 decks +45% synergy
Stasis
45% of 11 decks +45% synergy
Tolaria West
45% of 11 decks +44% synergy
Illusionist's Bracers
45% of 11 decks +44% synergy
Top Cards
Counterspell
64% of 11 decks +21% synergy
Solemn Simulacrum
55% of 11 decks +41% synergy
Training Grounds
45% of 11 decks +43% synergy
Archaeomancer
45% of 11 decks +42% synergy
Imprisoned in the Moon
45% of 11 decks +42% synergy
Propaganda
45% of 11 decks +33% synergy
Ponder
45% of 11 decks +33% synergy
Swan Song
45% of 11 decks +29% synergy
Mind Stone
45% of 11 decks +29% synergy
Mystic Remora
45% of 11 decks +28% synergy
Game Changers
Cyclonic Rift
73% of 11 decks +46% synergy
The One Ring
64% of 11 decks +56% synergy
Mystical Tutor
45% of 11 decks +31% synergy
Rhystic Study
45% of 11 decks +19% synergy
Mana Vault
27% of 11 decks +21% synergy
Fierce Guardianship
27% of 11 decks +9% synergy
Creatures
Walking Atlas
36% of 11 decks +36% synergy
Vizier of Tumbling Sands
36% of 11 decks +35% synergy
Scourge of Fleets
36% of 11 decks +34% synergy
Hullbreaker Horror
36% of 11 decks +29% synergy
Frost Augur
27% of 11 decks +27% synergy
Tiller Engine
27% of 11 decks +27% synergy
Dreamscape Artist
27% of 11 decks +27% synergy
Fatestitcher
27% of 11 decks +27% synergy
Aphetto Alchemist
27% of 11 decks +27% synergy
Silent Arbiter
27% of 11 decks +26% synergy
Peregrine Drake
27% of 11 decks +24% synergy
Instants
Arcane Denial
45% of 11 decks +25% synergy
An Offer You Can't Refuse
45% of 11 decks +24% synergy
Negate
45% of 11 decks +23% synergy
Capsize
36% of 11 decks +36% synergy
Aetherize
36% of 11 decks +30% synergy
Pongify
36% of 11 decks +25% synergy
Brainstorm
36% of 11 decks +17% synergy
Graven Lore
27% of 11 decks +27% synergy
Ghostly Flicker
27% of 11 decks +22% synergy
Force of Negation
27% of 11 decks +19% synergy
Reality Shift
27% of 11 decks +18% synergy
Rapid Hybridization
27% of 11 decks +18% synergy
Mana Drain
27% of 11 decks +12% synergy
Sorceries
Fabricate
36% of 11 decks +31% synergy
Spectral Deluge
27% of 11 decks +26% synergy
Sea Gate Restoration
27% of 11 decks +23% synergy
Preordain
27% of 11 decks +17% synergy
Windfall
27% of 11 decks +15% synergy
Utility Artifacts
Winter Moon
50% of 6 decks +49% synergy
Sapphire Medallion
36% of 11 decks +34% synergy
Swiftfoot Boots
36% of 11 decks +9% synergy
Winter Orb
27% of 11 decks +27% synergy
Isochron Scepter
27% of 11 decks +25% synergy
Sensei's Divining Top
27% of 11 decks +22% synergy
Lightning Greaves
27% of 11 decks +2% synergy
Enchantments
Reality Acid
27% of 11 decks +27% synergy
Frozen Aether
27% of 11 decks +27% synergy
Back to Basics
27% of 11 decks +26% synergy
Freed from the Real
27% of 11 decks +25% synergy
Planeswalkers
Narset, Parter of Veils
36% of 11 decks +32% synergy
Tezzeret the Seeker
27% of 11 decks +25% synergy
Utility Lands
Otawara, Soaring City
45% of 11 decks +29% synergy
Academy Ruins
36% of 11 decks +31% synergy
Reliquary Tower
36% of 11 decks +7% synergy
Mouth of Ronom
27% of 11 decks +27% synergy
Faceless Haven
27% of 11 decks +27% synergy
Minamo, School at Water's Edge
27% of 11 decks +23% synergy
Nykthos, Shrine to Nyx
27% of 11 decks +22% synergy
Mana Artifacts
Sol Ring
82% of 11 decks -2% synergy
Extraplanar Lens
55% of 11 decks +54% synergy
Caged Sun
55% of 11 decks +52% synergy
Arcane Signet
55% of 11 decks -18% synergy
Coldsteel Heart
45% of 11 decks +45% synergy
Arcum's Astrolabe
36% of 11 decks +36% synergy
Basalt Monolith
36% of 11 decks +34% synergy
Gilded Lotus
36% of 11 decks +33% synergy
Thought Vessel
36% of 11 decks +19% synergy
Gauntlet of Power
27% of 11 decks +26% synergy
Sky Diamond
27% of 11 decks +23% synergy
Thran Dynamo
27% of 11 decks +22% synergy
Lands
Myriad Landscape
45% of 11 decks +27% synergy
Prismatic Vista
27% of 11 decks +22% synergy
Flooded Strand
27% of 11 decks +16% synergy