Marina Vendrell + Ghostly Dancers + Intruder Alarm

Marina Vendrell
Ghostly Dancers
Intruder Alarm

Requires
Marina Vendrell must be on the battlefield. Ghostly Dancers must be on the battlefield. Intruder Alarm must be on the battlefield. The Room has one half locked, and the other half unlocked. Creatures you control can tap to produce enough mana to unlock the locked Room. Marina does not have summoning sickness.
Steps
  1. Activate any number of creatures you control by tapping them, adding at least enough mana to unlock a locked Room you control.
  2. Unlock any Room you control by paying its mana cost.
  3. Ghostly Dancers' second ability triggers, creating a 3/1 Spirit creature token.
  4. When the Spirit enters the battlefield, Intruder Alarm triggers, untap all creatures.
  5. Activate Marina by tapping it, locking the Room that was unlocked in step 1.
  6. Repeat.
Results
Infinite ETB. Infinite creature tokens. Infinite untap of all creatures. Infinite mana creatures you control can produce. Infinite unlocking of Rooms you control.

Marina Vendrell
1.15% of 1220 decks 14 decks
New Cards
Central Elevator // Promising Stairs
100% of 14 decks +69% synergy
Greenhouse // Rickety Gazebo
100% of 14 decks +56% synergy
Mirror Room // Fractured Realm
93% of 14 decks +62% synergy
Smoky Lounge // Misty Salon
93% of 14 decks +65% synergy
Unholy Annex // Ritual Chamber
93% of 14 decks +57% synergy
High Synergy Cards
Sanctum Weaver
93% of 14 decks +84% synergy
Freed from the Real
79% of 14 decks +77% synergy
Sythis, Harvest's Hand
71% of 14 decks +62% synergy
Funeral Room // Awakening Hall
86% of 14 decks +60% synergy
Dryad of the Ilysian Grove
71% of 14 decks +59% synergy
Dollmaker's Shop // Porcelain Gallery
79% of 14 decks +57% synergy
Cramped Vents // Access Maze
93% of 14 decks +54% synergy
Inquisitive Glimmer
86% of 14 decks +52% synergy
Bello, Bard of the Brambles
57% of 14 decks +50% synergy
Pemmin's Aura
50% of 14 decks +49% synergy
Top Cards
Restricted Office // Lecture Hall
86% of 14 decks +43% synergy
Walk-In Closet // Forgotten Cellar
86% of 14 decks +35% synergy
Moldering Gym // Weight Room
86% of 14 decks +32% synergy
Bottomless Pool // Locker Room
79% of 14 decks +48% synergy
Secret Arcade // Dusty Parlor
79% of 14 decks +35% synergy
Roaring Furnace // Steaming Sauna
79% of 14 decks +13% synergy
Grand Entryway // Elegant Rotunda
71% of 14 decks +43% synergy
Gremlin Tamer
71% of 14 decks +41% synergy
Charred Foyer // Warped Space
71% of 14 decks +34% synergy
Meat Locker // Drowned Diner
71% of 14 decks -4% synergy
Creatures
Entity Tracker
64% of 14 decks +16% synergy
Victor, Valgavoth's Seneschal
50% of 14 decks +28% synergy
Destiny Spinner
43% of 14 decks +38% synergy
Eidolon of Blossoms
43% of 14 decks +36% synergy
Enduring Vitality
43% of 14 decks +8% synergy
Herald of the Pantheon
36% of 14 decks +31% synergy
Jukai Naturalist
36% of 14 decks +28% synergy
Bloom Tender
36% of 14 decks +18% synergy
Balemurk Leech
36% of 14 decks +15% synergy
Faeburrow Elder
36% of 14 decks +14% synergy
Fear of Sleep Paralysis
36% of 14 decks +1% synergy
Ondu Spiritdancer
29% of 14 decks +27% synergy
Starfield Mystic
29% of 14 decks +26% synergy
Doomwake Giant
29% of 14 decks +25% synergy
Setessan Champion
29% of 14 decks +22% synergy
Enduring Courage
29% of 14 decks +19% synergy
Aminatou, Veil Piercer
29% of 14 decks +17% synergy
The Master of Keys
29% of 14 decks +9% synergy
Thassa, Deep-Dwelling
21% of 14 decks +20% synergy
Displacer Kitten
21% of 14 decks +19% synergy
Scrabbling Skullcrab
21% of 14 decks +18% synergy
Zur, Eternal Schemer
21% of 14 decks +18% synergy
Skullsnap Nuisance
21% of 14 decks +11% synergy
Marvin, Murderous Mimic
21% of 14 decks +9% synergy
Wildsear, Scouring Maw
21% of 14 decks +6% synergy
Instants
Teferi's Protection
29% of 14 decks +10% synergy
Swords to Plowshares
29% of 14 decks -12% synergy
Ephemerate
21% of 14 decks +19% synergy
Anguished Unmaking
21% of 14 decks +11% synergy
Counterspell
21% of 14 decks +1% synergy
Heroic Intervention
21% of 14 decks +1% synergy
Cyclonic Rift
21% of 14 decks +0% synergy
Sorceries
Nature's Lore
43% of 14 decks +14% synergy
Farseek
43% of 14 decks -3% synergy
Cultivate
36% of 14 decks -3% synergy
Redress Fate
21% of 14 decks +3% synergy
Three Visits
21% of 14 decks -3% synergy
Kodama's Reach
21% of 14 decks -5% synergy
Utility Artifacts
Illusionist's Bracers
36% of 14 decks +35% synergy
Thousand-Year Elixir
36% of 14 decks +34% synergy
Keys to the House
36% of 14 decks +9% synergy
Swiftfoot Boots
21% of 14 decks +8% synergy
Lightning Greaves
21% of 14 decks +3% synergy
Enchantments
Polluted Cistern // Dim Oubliette
64% of 14 decks +35% synergy
Dazzling Theater // Prop Room
64% of 14 decks -10% synergy
Glassworks // Shattered Yard
57% of 14 decks +27% synergy
Spiked Corridor // Torture Pit
57% of 14 decks +26% synergy
Defiled Crypt // Cadaver Lab
57% of 14 decks +17% synergy
Derelict Attic // Widow's Walk
57% of 14 decks -7% synergy
Starfield of Nyx
50% of 14 decks +47% synergy
Enchantress's Presence
50% of 14 decks +43% synergy
Painter's Studio // Defaced Gallery
50% of 14 decks +13% synergy
Surgical Suite // Hospital Room
43% of 14 decks -2% synergy
Teleportation Circle
29% of 14 decks +27% synergy
Privileged Position
29% of 14 decks +26% synergy
Sphere of Safety
29% of 14 decks +22% synergy
Sterling Grove
29% of 14 decks +20% synergy
Leyline of the Guildpact
29% of 14 decks +4% synergy
Ticket Booth // Tunnel of Hate
29% of 14 decks -18% synergy
Instill Energy
21% of 14 decks +21% synergy
Mirrormade
21% of 14 decks +20% synergy
Estrid's Invocation
21% of 14 decks +20% synergy
Imprisoned in the Moon
21% of 14 decks +19% synergy
Utopia Sprawl
21% of 14 decks +18% synergy
Wild Growth
21% of 14 decks +18% synergy
Fertile Ground
21% of 14 decks +17% synergy
Spelunking
21% of 14 decks +13% synergy
Rhystic Study
21% of 14 decks -3% synergy
Underwater Tunnel // Slimy Aquarium
21% of 14 decks -30% synergy
Utility Lands
Hall of Heliod's Generosity
50% of 14 decks +44% synergy
Reliquary Tower
29% of 14 decks +4% synergy
Minamo, School at Water's Edge
21% of 14 decks +19% synergy
Mana Artifacts
Arcane Signet
86% of 14 decks +12% synergy
Chromatic Lantern
71% of 14 decks +19% synergy
Sol Ring
71% of 14 decks -6% synergy
Decanter of Endless Water
21% of 14 decks +15% synergy
Lands
Command Tower
93% of 14 decks +5% synergy
Exotic Orchard
64% of 14 decks +2% synergy
The World Tree
57% of 14 decks +23% synergy
Breeding Pool
50% of 14 decks +19% synergy
Temple Garden
50% of 14 decks +19% synergy
Sacred Foundry
43% of 14 decks +19% synergy
Watery Grave
43% of 14 decks +17% synergy
Godless Shrine
43% of 14 decks +17% synergy
Windswept Heath
43% of 14 decks +16% synergy
Hallowed Fountain
43% of 14 decks +15% synergy
Misty Rainforest
43% of 14 decks +14% synergy
Overgrown Tomb
43% of 14 decks +12% synergy
Valgavoth's Lair
36% of 14 decks +14% synergy
Flooded Strand
36% of 14 decks +11% synergy
Wooded Foothills
36% of 14 decks +10% synergy
Steam Vents
36% of 14 decks +10% synergy
Ketria Triome
36% of 14 decks +9% synergy
Verdant Catacombs
36% of 14 decks +7% synergy
Stomping Ground
36% of 14 decks +5% synergy
Arcane Sanctum
29% of 14 decks +16% synergy
Reflecting Pool
29% of 14 decks +13% synergy
Raugrin Triome
29% of 14 decks +8% synergy
Bloodstained Mire
29% of 14 decks +7% synergy
Blood Crypt
29% of 14 decks +5% synergy
Spara's Headquarters
29% of 14 decks +4% synergy
Scalding Tarn
29% of 14 decks +3% synergy
Arid Mesa
29% of 14 decks +2% synergy
Marsh Flats
29% of 14 decks +2% synergy
Nomad Outpost
21% of 14 decks +8% synergy
Mystic Monastery
21% of 14 decks +7% synergy
Sandsteppe Citadel
21% of 14 decks +6% synergy
Frontier Bivouac
21% of 14 decks +4% synergy
Jungle Shrine
21% of 14 decks +4% synergy
Savai Triome
21% of 14 decks +2% synergy
Polluted Delta
21% of 14 decks -2% synergy
Jetmir's Garden
21% of 14 decks -3% synergy
Zagoth Triome
21% of 14 decks -3% synergy
Indatha Triome
21% of 14 decks -4% synergy
Path of Ancestry
21% of 14 decks -18% synergy