Plaguemaw Beast + Intruder Alarm + Scurry Oak

Plaguemaw Beast
Intruder Alarm
Scurry Oak

Requires
Plaguemaw Beast must be on the battlefield. Intruder Alarm must be on the battlefield. Scurry Oak must be on the battlefield. Plaguemaw Beast does not have summoning sickness. Scurry Oak has at least one +1/+1 counter on it. You control at least one additional creature.
Steps
  1. Activate Plaguemaw Beast by tapping it and sacrificing another creature, putting a +1/+1 counter on Scurry Oak.
  2. Scurry Oak triggers, creating a 1/1 Squirrel creature token.
  3. When the Squirrel enters the battlefield, Intruder Alarm triggers, untapping all creatures.
  4. Repeat.
Results
Infinite +1/+1 counters on Scurry Oak. Infinite death triggers. Infinite ETB. Infinite LTB. Infinite proliferate. Infinite sacrifice triggers.

Xavier Sal, Infested Captain
0.17% of 4836 decks 8 decks
The Wise Mothman
0.01% of 13690 decks 2 decks
Vorel of the Hull Clade
0.05% of 2086 decks 1 decks
High Synergy Cards
Basking Broodscale
80% of 5 decks +78% synergy
Evolution Sage
73% of 11 decks +66% synergy
Ezuri, Stalker of Spheres
64% of 11 decks +60% synergy
Fathom Mage
64% of 11 decks +60% synergy
Tekuthal, Inquiry Dominus
55% of 11 decks +52% synergy
Cankerbloom
55% of 11 decks +48% synergy
Thallid
45% of 11 decks +45% synergy
Inexorable Tide
45% of 11 decks +43% synergy
Flux Channeler
45% of 11 decks +42% synergy
Zulaport Cutthroat
50% of 10 decks +40% synergy
Top Cards
Venser, Corpse Puppet
40% of 10 decks +39% synergy
Tyvar, Jubilant Brawler
40% of 10 decks +35% synergy
Mirkwood Bats
40% of 10 decks +28% synergy
Utopia Mycon
36% of 11 decks +36% synergy
Astral Cornucopia
36% of 11 decks +35% synergy
Mycoloth
36% of 11 decks +34% synergy
Deepglow Skate
36% of 11 decks +34% synergy
Tainted Observer
36% of 11 decks +34% synergy
Master Biomancer
36% of 11 decks +33% synergy
Tezzeret's Gambit
36% of 11 decks +33% synergy
Creatures
Dreamtide Whale
60% of 5 decks +56% synergy
Thrummingbird
36% of 11 decks +33% synergy
Vorinclex, Monstrous Raider
36% of 11 decks +33% synergy
Kiora's Follower
36% of 11 decks +31% synergy
Kami of Whispered Hopes
36% of 11 decks +29% synergy
Birds of Paradise
36% of 11 decks +9% synergy
Deathspore Thallid
30% of 10 decks +29% synergy
Slimefoot, the Stowaway
30% of 10 decks +28% synergy
Blightbelly Rat
30% of 10 decks +28% synergy
Yawgmoth, Thran Physician
30% of 10 decks +26% synergy
Winding Constrictor
30% of 10 decks +26% synergy
Pitiless Plunderer
30% of 10 decks +22% synergy
Blood Artist
30% of 10 decks +18% synergy
Thallid Shell-Dweller
27% of 11 decks +27% synergy
Sakura-Tribe Elder
27% of 11 decks +9% synergy
Instants
Ripples of Potential
43% of 7 decks +40% synergy
Atomize
43% of 7 decks +37% synergy
Abrupt Decay
30% of 10 decks +20% synergy
Prologue to Phyresis
27% of 11 decks +25% synergy
Experimental Augury
27% of 11 decks +24% synergy
Counterspell
27% of 11 decks -16% synergy
Sorceries
Nature's Lore
27% of 11 decks -5% synergy
Farseek
27% of 11 decks -7% synergy
Utility Artifacts
Thornbite Staff
27% of 11 decks +26% synergy
Ichormoon Gauntlet
27% of 11 decks +25% synergy
Altar of Dementia
27% of 11 decks +25% synergy
Ashnod's Altar
27% of 11 decks +20% synergy
Skullclamp
27% of 11 decks +15% synergy
Swiftfoot Boots
27% of 11 decks -1% synergy
Enchantments
Master Chef
27% of 11 decks +26% synergy
Doubling Season
27% of 11 decks +18% synergy
Mystic Remora
27% of 11 decks +9% synergy
Planeswalkers
Vraska, Relic Seeker
30% of 10 decks +29% synergy
Garruk, Cursed Huntsman
30% of 10 decks +28% synergy
Vraska, Betrayal's Sting
30% of 10 decks +27% synergy
Nissa, Voice of Zendikar
27% of 11 decks +26% synergy
Utility Lands
Karn's Bastion
36% of 11 decks +31% synergy
Yavimaya, Cradle of Growth
36% of 11 decks +27% synergy
Urborg, Tomb of Yawgmoth
36% of 11 decks +27% synergy
Reliquary Tower
27% of 11 decks -2% synergy
Mana Artifacts
Sol Ring
91% of 11 decks +6% synergy
Arcane Signet
45% of 11 decks -27% synergy
Everflowing Chalice
36% of 11 decks +32% synergy
Lands
Command Tower
100% of 11 decks +26% synergy
Woodland Cemetery
70% of 10 decks +42% synergy
Drowned Catacomb
60% of 10 decks +34% synergy
Hinterland Harbor
55% of 11 decks +27% synergy
Breeding Pool
55% of 11 decks +14% synergy
Llanowar Wastes
50% of 10 decks +24% synergy
Watery Grave
50% of 10 decks +9% synergy
Overgrown Tomb
50% of 10 decks +8% synergy
Yavimaya Coast
45% of 11 decks +19% synergy
Temple of Malady
40% of 10 decks +24% synergy
Temple of Deceit
40% of 10 decks +24% synergy
Opulent Palace
40% of 10 decks +13% synergy
Sunken Hollow
40% of 10 decks +5% synergy
Polluted Delta
36% of 11 decks +25% synergy
Verdant Catacombs
36% of 11 decks +25% synergy
Misty Rainforest
36% of 11 decks +25% synergy
Temple of Mystery
36% of 11 decks +19% synergy
Exotic Orchard
36% of 11 decks +1% synergy
Golgari Rot Farm
30% of 10 decks +12% synergy
Underground River
30% of 10 decks +10% synergy
Zagoth Triome
30% of 10 decks -0% synergy
Dreamroot Cascade
27% of 11 decks +8% synergy
Path of Ancestry
27% of 11 decks +6% synergy