Necrotic Ooze + Endling + Triskelion + Phyrexian Altar

Necrotic Ooze
Endling
Triskelion
Phyrexian Altar

Requires
Necrotic Ooze must be on the battlefield. Endling must be in the graveyard. Triskelion must be in the graveyard. Phyrexian Altar must be on the battlefield. Mana needed:
Steps
  1. Activate Necrotic Ooze using Endling's third ability by paying , giving Necrotic Ooze undying until end of turn.
  2. If Necrotic Ooze has any +1/+1 counters, activate it using Triskelion's ability by removing a +1/+1 counter from it, dealing 1 damage to any target.
  3. Repeat step 2 until Necrotic Ooze has no +1/+1 counters.
  4. Activate Phyrexian Altar by sacrificing Necrotic Ooze, adding .
  5. Necrotic Ooze dies, triggering its undying ability, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
  6. Repeat.
Results
Infinite damage. Infinite death triggers. Infinite ETB. Infinite LTB. Infinite sacrifice triggers.

K'rrik, Son of Yawgmoth
0.01% of 13841 decks 2 decks
Trazyn the Infinite
0.10% of 1990 decks 2 decks
Old Stickfingers
0.07% of 2786 decks 2 decks
Mairsil, the Pretender
0.13% of 1576 decks 2 decks
The Scarab God
0.02% of 10352 decks 2 decks
Jarad, Golgari Lich Lord
0.03% of 3870 decks 1 decks
Oskar, Rubbish Reclaimer
0.04% of 2250 decks 1 decks
Meren of Clan Nel Toth
0.01% of 14905 decks 1 decks
Skithiryx, the Blight Dragon
0.05% of 1844 decks 1 decks
Sidisi, Brood Tyrant
0.02% of 6243 decks 1 decks
Kodama of the East Tree // Ravos, Soultender
0.36% of 279 decks 1 decks
Slimefoot and Squee
0.01% of 7791 decks 1 decks
Elas il-Kor, Sadistic Pilgrim
0.02% of 6454 decks 1 decks
Ishkanah, Grafwidow
0.10% of 978 decks 1 decks
Fain, the Broker
0.36% of 279 decks 1 decks
High Synergy Cards
Frantic Search
100% of 6 decks +88% synergy
Channeler Initiate
75% of 8 decks +75% synergy
Walking Ballista
75% of 20 decks +72% synergy
Asmodeus the Archfiend
70% of 20 decks +69% synergy
Aetherling
67% of 6 decks +67% synergy
Arcanis the Omnipotent
67% of 6 decks +65% synergy
Buried Alive
70% of 20 decks +64% synergy
Skirge Familiar
65% of 20 decks +64% synergy
Fact or Fiction
67% of 6 decks +60% synergy
Devoted Druid
62% of 8 decks +60% synergy
Top Cards
Beast Within
75% of 8 decks +36% synergy
Entomb
65% of 20 decks +58% synergy
Sakura-Tribe Elder
62% of 8 decks +44% synergy
Assassin's Trophy
62% of 8 decks +32% synergy
Phyrexian Devourer
55% of 20 decks +55% synergy
Pili-Pala
55% of 20 decks +55% synergy
Magus of the Coffers
55% of 20 decks +54% synergy
Fauna Shaman
50% of 8 decks +47% synergy
Life from the Loam
50% of 8 decks +46% synergy
Reanimate
50% of 20 decks +34% synergy
Creatures
Likeness Looter
75% of 4 decks +71% synergy
Cankerbloom
60% of 5 decks +53% synergy
Horseshoe Crab
50% of 6 decks +50% synergy
Eternal Witness
50% of 8 decks +29% synergy
Farmstead Gleaner
45% of 20 decks +45% synergy
Cinderhaze Wretch
40% of 20 decks +40% synergy
Fain, the Broker
40% of 20 decks +39% synergy
Palladium Myr
40% of 20 decks +38% synergy
Elvish Aberration
38% of 8 decks +37% synergy
Golgari Grave-Troll
38% of 8 decks +36% synergy
Lord of Extinction
38% of 8 decks +36% synergy
Satyr Wayfinder
38% of 8 decks +35% synergy
Fiend Artisan
38% of 8 decks +35% synergy
Underrealm Lich
38% of 8 decks +34% synergy
Ramunap Excavator
38% of 8 decks +31% synergy
Vile Entomber
30% of 20 decks +28% synergy
Mikaeus, the Unhallowed
30% of 20 decks +27% synergy
Viscera Seer
30% of 20 decks +21% synergy
Drivnod, Carnage Dominus
27% of 15 decks +23% synergy
Stinkweed Imp
25% of 20 decks +24% synergy
Corpse Connoisseur
20% of 20 decks +20% synergy
Chainer, Dementia Master
20% of 20 decks +19% synergy
Doom Whisperer
20% of 20 decks +18% synergy
Stitcher's Supplier
20% of 20 decks +17% synergy
Grim Haruspex
20% of 20 decks +16% synergy
Zulaport Cutthroat
20% of 20 decks +10% synergy
Pack Rat
15% of 20 decks +14% synergy
Golgari Thug
15% of 20 decks +14% synergy
Blood Pet
15% of 20 decks +14% synergy
Sidisi, Undead Vizier
15% of 20 decks +13% synergy
Shriekmaw
15% of 20 decks +12% synergy
Gravecrawler
15% of 20 decks +12% synergy
Yawgmoth, Thran Physician
15% of 20 decks +11% synergy
Massacre Wurm
15% of 20 decks +11% synergy
Sheoldred, Whispering One
15% of 20 decks +10% synergy
Crypt Ghast
15% of 20 decks +10% synergy
Plaguecrafter
15% of 20 decks +10% synergy
Opposition Agent
15% of 20 decks +8% synergy
Dauthi Voidwalker
15% of 20 decks +7% synergy
Blood Artist
15% of 20 decks +3% synergy
Instants
Vampiric Tutor
40% of 20 decks +22% synergy
Grisly Salvage
38% of 8 decks +32% synergy
Abrupt Decay
38% of 8 decks +27% synergy
Dark Ritual
35% of 20 decks +13% synergy
Culling the Weak
25% of 20 decks +21% synergy
Infernal Grasp
20% of 20 decks +12% synergy
Village Rites
20% of 20 decks +10% synergy
Cut Down
16% of 19 decks +15% synergy
Imp's Mischief
15% of 20 decks +12% synergy
Defile
15% of 20 decks +12% synergy
Cabal Ritual
15% of 20 decks +10% synergy
Deadly Rollick
15% of 20 decks +4% synergy
Deadly Dispute
15% of 20 decks +4% synergy
Sorceries
Demonic Tutor
55% of 20 decks +33% synergy
Careful Study
50% of 6 decks +49% synergy
Windfall
50% of 6 decks +37% synergy
Unmarked Grave
40% of 20 decks +37% synergy
Diabolic Intent
40% of 20 decks +31% synergy
Toxic Deluge
40% of 20 decks +23% synergy
Damnation
30% of 20 decks +22% synergy
Victimize
30% of 20 decks +18% synergy
Feed the Swarm
30% of 20 decks +12% synergy
Final Parting
25% of 20 decks +23% synergy
Persist
20% of 20 decks +18% synergy
Grim Tutor
20% of 20 decks +15% synergy
Torment of Hailfire
20% of 20 decks +15% synergy
Dread Return
20% of 20 decks +15% synergy
Living Death
20% of 20 decks +15% synergy
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15% of 20 decks +13% synergy
Agadeem's Awakening
15% of 20 decks +11% synergy
Diabolic Tutor
15% of 20 decks +9% synergy
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15% of 20 decks +6% synergy
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15% of 20 decks +5% synergy
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45% of 20 decks +20% synergy
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40% of 20 decks +32% synergy
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40% of 20 decks +12% synergy
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Necromancy
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Otawara, Soaring City
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65% of 20 decks +55% synergy
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60% of 20 decks +49% synergy
Riptide Laboratory
50% of 6 decks +48% synergy
Bojuka Bog
40% of 20 decks +10% synergy
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30% of 20 decks +22% synergy
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30% of 20 decks +21% synergy
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30% of 20 decks +19% synergy
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25% of 20 decks +24% synergy
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25% of 20 decks +22% synergy
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25% of 20 decks +21% synergy
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25% of 20 decks +14% synergy
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20% of 20 decks +18% synergy
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Command Beacon
20% of 20 decks +15% synergy
Urza's Saga
20% of 20 decks +13% synergy
Reliquary Tower
15% of 20 decks -14% synergy
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Sol Ring
95% of 20 decks +11% synergy
Arcane Signet
80% of 20 decks +8% synergy
Dimir Signet
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Gilded Lotus
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Mind Stone
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Thran Dynamo
15% of 20 decks +10% synergy
Mana Crypt
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Commander's Sphere
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Shipwreck Marsh
67% of 6 decks +48% synergy
Morphic Pool
67% of 6 decks +40% synergy
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Undergrowth Stadium
50% of 8 decks +24% synergy
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38% of 8 decks +28% synergy
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38% of 8 decks +20% synergy
Woodland Cemetery
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38% of 8 decks -5% synergy
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Bloodstained Mire
20% of 20 decks +10% synergy
Scalding Tarn
20% of 20 decks +9% synergy
Polluted Delta
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Verdant Catacombs
20% of 20 decks +9% synergy
Terramorphic Expanse
20% of 20 decks +4% synergy
Evolving Wilds
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Fabled Passage
15% of 20 decks +6% synergy