Skeleton Ship + Intruder Alarm + Geralf's Messenger + Ashnod's Altar

Skeleton Ship
Intruder Alarm
Geralf's Messenger
Ashnod's Altar

Requires
Skeleton Ship must be on the battlefield. Intruder Alarm must be on the battlefield. Geralf's Messenger must be on the battlefield. Ashnod's Altar must be on the battlefield.
Steps
  1. Activate Ashnod's Altar by sacrificing Geralf's Messenger, adding .
  2. Geralf's Messenger dies, triggering its undying ability, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
  3. Geralf's Messenger enters the battlefield, triggering itself and Intruder Alarm.
  4. Resolve the Geralf's Messenger trigger, causing an opponent to lose 2 life.
  5. Resolve the Intruder Alarm trigger, untapping all creatures.
  6. Activate Skeleton Ship by tapping it, putting a -1/-1 counter on Geralf's Messenger.
  7. Repeat.
Results
Infinite colorless mana. Infinite death triggers. Infinite ETB. Infinite lifeloss. Infinite LTB. Infinite mana creatures you control can produce. Infinite sacrifice triggers. Infinite untap of creatures.

Skeleton Ship
1.14% of 874 decks 10 decks
Varina, Lich Queen
0.01% of 8584 decks 1 decks
High Synergy Cards
Blowfly Infestation
82% of 11 decks +81% synergy
Freed from the Real
82% of 11 decks +80% synergy
Phyrexian Altar
82% of 11 decks +78% synergy
Necroskitter
73% of 11 decks +72% synergy
Nest of Scarabs
73% of 11 decks +72% synergy
Polymorphist's Jest
73% of 11 decks +72% synergy
Pemmin's Aura
73% of 11 decks +72% synergy
Skeleton Crew
71% of 7 decks +71% synergy
Thornbite Staff
64% of 11 decks +63% synergy
Crumbling Ashes
55% of 11 decks +54% synergy
Top Cards
Lightning Greaves
64% of 11 decks +39% synergy
Yawgmoth, Thran Physician
55% of 11 decks +51% synergy
Swiftfoot Boots
55% of 11 decks +27% synergy
Counterspell
55% of 11 decks +12% synergy
Spitting Dilophosaurus
50% of 8 decks +49% synergy
Geralf's Mindcrusher
45% of 11 decks +45% synergy
Black Sun's Zenith
45% of 11 decks +44% synergy
Thousand-Year Elixir
45% of 11 decks +43% synergy
Inexorable Tide
45% of 11 decks +43% synergy
Flux Channeler
45% of 11 decks +43% synergy
Game Changers
Vampiric Tutor
55% of 11 decks +37% synergy
Demonic Tutor
55% of 11 decks +33% synergy
Rhystic Study
55% of 11 decks +28% synergy
Fierce Guardianship
36% of 11 decks +18% synergy
Thassa's Oracle
27% of 11 decks +20% synergy
Mystical Tutor
27% of 11 decks +13% synergy
Cyclonic Rift
27% of 11 decks +1% synergy
Creatures
Thrummingbird
45% of 11 decks +42% synergy
Blood Artist
45% of 11 decks +34% synergy
Massacre Girl, Known Killer
43% of 7 decks +41% synergy
Dreamtide Whale
43% of 7 decks +40% synergy
Pirate Ship
36% of 11 decks +36% synergy
Sightless Ghoul
36% of 11 decks +36% synergy
Butcher Ghoul
36% of 11 decks +36% synergy
Vizier of Tumbling Sands
36% of 11 decks +35% synergy
Mikaeus, the Unhallowed
36% of 11 decks +34% synergy
Notion Thief
36% of 11 decks +30% synergy
Callous Oppressor
27% of 11 decks +27% synergy
Fatestitcher
27% of 11 decks +27% synergy
Kelpie Guide
27% of 11 decks +26% synergy
Tekuthal, Inquiry Dominus
27% of 11 decks +25% synergy
Toxrill, the Corrosive
27% of 11 decks +24% synergy
Reassembling Skeleton
27% of 11 decks +24% synergy
Carrion Feeder
27% of 11 decks +22% synergy
Pitiless Plunderer
27% of 11 decks +20% synergy
Viscera Seer
27% of 11 decks +18% synergy
Zulaport Cutthroat
27% of 11 decks +18% synergy
Baleful Strix
27% of 11 decks +14% synergy
Instants
Flatline
38% of 8 decks +37% synergy
Deadly Rollick
36% of 11 decks +25% synergy
Swan Song
36% of 11 decks +20% synergy
Dark Ritual
36% of 11 decks +14% synergy
Grim Affliction
27% of 11 decks +27% synergy
Prologue to Phyresis
27% of 11 decks +26% synergy
Experimental Augury
27% of 11 decks +25% synergy
Demonic Consultation
27% of 11 decks +24% synergy
Muddle the Mixture
27% of 11 decks +22% synergy
Mana Drain
27% of 11 decks +12% synergy
Arcane Denial
27% of 11 decks +7% synergy
Negate
27% of 11 decks +5% synergy
Sorceries
Exsanguinate
36% of 11 decks +30% synergy
Diabolic Intent
36% of 11 decks +28% synergy
Contentious Plan
27% of 11 decks +26% synergy
Tezzeret's Gambit
27% of 11 decks +24% synergy
Grim Tutor
27% of 11 decks +23% synergy
Gitaxian Probe
27% of 11 decks +22% synergy
Read the Bones
27% of 11 decks +20% synergy
Preordain
27% of 11 decks +17% synergy
Ponder
27% of 11 decks +15% synergy
Utility Artifacts
Sting, the Glinting Dagger
40% of 10 decks +39% synergy
Staff of Domination
27% of 11 decks +26% synergy
Altar of Dementia
27% of 11 decks +25% synergy
Lotus Petal
27% of 11 decks +20% synergy
Wayfarer's Bauble
27% of 11 decks +18% synergy
Enchantments
Mystic Remora
45% of 11 decks +28% synergy
Amphibian Downpour
43% of 7 decks +40% synergy
Retreat to Coralhelm
36% of 11 decks +34% synergy
Phyrexian Arena
36% of 11 decks +21% synergy
The Meathook Massacre
27% of 11 decks +22% synergy
Black Market Connections
27% of 11 decks +16% synergy
Utility Lands
Bojuka Bog
64% of 11 decks +34% synergy
Urborg, Tomb of Yawgmoth
45% of 11 decks +36% synergy
Detection Tower
36% of 11 decks +36% synergy
Minamo, School at Water's Edge
36% of 11 decks +32% synergy
Karn's Bastion
36% of 11 decks +32% synergy
Hall of the Bandit Lord
27% of 11 decks +27% synergy
Arcane Lighthouse
27% of 11 decks +26% synergy
Mana Artifacts
Sol Ring
100% of 11 decks +16% synergy
Arcane Signet
64% of 11 decks -9% synergy
Dimir Signet
55% of 11 decks +26% synergy
Talisman of Dominance
55% of 11 decks +22% synergy
Fellwar Stone
45% of 11 decks +24% synergy
Lands
Command Tower
91% of 11 decks +17% synergy
Underground River
73% of 11 decks +52% synergy
Watery Grave
73% of 11 decks +32% synergy
Prismatic Vista
55% of 11 decks +49% synergy
Shipwreck Marsh
55% of 11 decks +36% synergy
Morphic Pool
45% of 11 decks +20% synergy
Drowned Catacomb
45% of 11 decks +19% synergy
Sunken Hollow
45% of 11 decks +11% synergy
Darkslick Shores
36% of 11 decks +31% synergy
Tainted Isle
36% of 11 decks +25% synergy
Polluted Delta
36% of 11 decks +25% synergy
Dimir Aqueduct
36% of 11 decks +20% synergy
Myriad Landscape
36% of 11 decks +18% synergy
Underground Sea
27% of 11 decks +13% synergy
Darkwater Catacombs
27% of 11 decks +12% synergy
Evolving Wilds
27% of 11 decks +6% synergy
Exotic Orchard
27% of 11 decks -9% synergy