Cauldron of Souls + Dross Scorpion + Ashnod's Altar + Mycosynth Lattice

Cauldron of Souls
Dross Scorpion
Ashnod's Altar
Mycosynth Lattice

Requires
Cauldron of Souls must be on the battlefield. Dross Scorpion must be on the battlefield. Ashnod's Altar must be on the battlefield. Mycosynth Lattice must be on the battlefield. An opponent was dealt damage this turn. The creature with bloodthirst does not have a -1/-1 counter on it.
Steps
  1. Activate Cauldron of Souls by tapping it, giving the creature with bloodthirst persist until end of turn.
  2. Activate Ashnod's Altar by sacrificing the creature with bloodthirst, adding .
  3. When the creature dies, its persist ability and Dross Scorpion trigger.
  4. Resolve the persist trigger, returning the creature from your graveyard to the battlefield, which enters the battlefield with at least one +1/+1 counter on it due to its bloodthirst ability.
  5. Resolve the Dross Scorpion trigger, untapping Cauldron of Souls.
  6. Repeat.
Results
Infinite LTB. Infinite ETB. Infinite colored mana. Infinite sacrifice triggers. Infinite death triggers. Infinite colorless mana.

Basalt Monolith
76% of 21 decks +73% synergy
Triskelion
71% of 21 decks +71% synergy
Fabricate
71% of 7 decks +68% synergy
Rings of Brighthearth
62% of 21 decks +60% synergy
Pentavus
57% of 21 decks +57% synergy
Buried Ruin
62% of 21 decks +57% synergy
Master Transmuter
57% of 7 decks +56% synergy
Thoughtcast
57% of 7 decks +55% synergy
Academy Ruins
57% of 7 decks +55% synergy
Gilded Lotus
57% of 21 decks +54% synergy
Top Cards
Phyrexian Altar
57% of 21 decks +53% synergy
Sensei's Divining Top
57% of 21 decks +51% synergy
Cyclonic Rift
57% of 7 decks +43% synergy
Voltaic Key
52% of 21 decks +52% synergy
Krark-Clan Ironworks
52% of 21 decks +51% synergy
Darksteel Forge
52% of 21 decks +51% synergy
Myr Battlesphere
52% of 21 decks +50% synergy
Everflowing Chalice
52% of 21 decks +48% synergy
Thran Dynamo
52% of 21 decks +48% synergy
Myr Turbine
48% of 21 decks +47% synergy
Creatures
Disciple of the Vault
50% of 6 decks +49% synergy
Steel Overseer
48% of 21 decks +46% synergy
Palladium Myr
48% of 21 decks +46% synergy
Vedalken Archmage
43% of 7 decks +42% synergy
Solemn Simulacrum
43% of 21 decks +29% synergy
Myr Retriever
38% of 21 decks +36% synergy
Foundry Inspector
38% of 21 decks +34% synergy
Goblin Welder
38% of 8 decks +36% synergy
Reckless Fireweaver
38% of 8 decks +35% synergy
Karn, Silver Golem
33% of 21 decks +33% synergy
Voltaic Construct
33% of 21 decks +33% synergy
Metalworker
33% of 21 decks +33% synergy
Wurmcoil Engine
33% of 21 decks +31% synergy
Walking Ballista
33% of 21 decks +31% synergy
Liberator, Urza's Battlethopter
30% of 10 decks +28% synergy
Arcbound Ravager
29% of 21 decks +28% synergy
Cryptic Trilobite
26% of 19 decks +26% synergy
Stonecoil Serpent
26% of 19 decks +25% synergy
Thopter Squadron
24% of 21 decks +24% synergy
Cogwork Assembler
24% of 21 decks +24% synergy
Mycosynth Golem
24% of 21 decks +23% synergy
Hangarback Walker
24% of 21 decks +23% synergy
Scrap Trawler
24% of 21 decks +22% synergy
Canoptek Spyder
23% of 13 decks +22% synergy
Triskelavus
19% of 21 decks +19% synergy
Memnite
19% of 21 decks +18% synergy
Burnished Hart
19% of 21 decks +15% synergy
Wandering Archaic
18% of 17 decks +16% synergy
Jhoira's Familiar
16% of 19 decks +14% synergy
Su-Chi
14% of 21 decks +14% synergy
Scarecrone
14% of 21 decks +14% synergy
Arcbound Crusher
14% of 21 decks +14% synergy
Kuldotha Forgemaster
14% of 21 decks +13% synergy
Blightsteel Colossus
14% of 21 decks +13% synergy
Shimmer Myr
14% of 21 decks +13% synergy
Ornithopter
14% of 21 decks +12% synergy
Instants
Pongify
43% of 7 decks +37% synergy
Mystical Tutor
43% of 7 decks +35% synergy
Counterspell
43% of 7 decks +22% synergy
Scour from Existence
14% of 21 decks +14% synergy
Utility Artifacts
Nim Deathmantle
48% of 21 decks +47% synergy
Clock of Omens
48% of 21 decks +47% synergy
Nevinyrral's Disk
48% of 21 decks +46% synergy
Blasting Station
43% of 21 decks +42% synergy
Unwinding Clock
43% of 21 decks +40% synergy
Planar Portal
38% of 21 decks +38% synergy
Salvaging Station
33% of 21 decks +33% synergy
Grinding Station
33% of 21 decks +33% synergy
Umbral Mantle
33% of 21 decks +32% synergy
Forsaken Monument
33% of 18 decks +32% synergy
Prototype Portal
29% of 21 decks +28% synergy
Lux Cannon
29% of 21 decks +28% synergy
Animation Module
29% of 21 decks +28% synergy
Heartstone
29% of 21 decks +28% synergy
Staff of Domination
29% of 21 decks +27% synergy
Altar of Dementia
29% of 21 decks +26% synergy
Mystic Forge
26% of 19 decks +23% synergy
Flayer Husk
24% of 21 decks +24% synergy
Blade of the Bloodchief
24% of 21 decks +23% synergy
Trading Post
24% of 21 decks +23% synergy
Ichor Wellspring
24% of 21 decks +22% synergy
Cloud Key
24% of 21 decks +22% synergy
Isochron Scepter
24% of 21 decks +21% synergy
Aetherflux Reservoir
24% of 21 decks +20% synergy
The Ozolith
22% of 18 decks +19% synergy
Ugin's Nexus
19% of 21 decks +19% synergy
Mindslaver
19% of 21 decks +19% synergy
Mirrorworks
19% of 21 decks +18% synergy
Spine of Ish Sah
19% of 21 decks +18% synergy
Scythe of the Wretched
14% of 21 decks +14% synergy
Gorgon Flail
14% of 21 decks +14% synergy
Myr Matrix
14% of 21 decks +14% synergy
Genesis Chamber
14% of 21 decks +14% synergy
Mycosynth Wellspring
14% of 21 decks +13% synergy
Sculpting Steel
14% of 21 decks +12% synergy
Expedition Map
14% of 21 decks +11% synergy
Strionic Resonator
14% of 21 decks +11% synergy
Wayfarer's Bauble
14% of 21 decks +4% synergy
Skullclamp
14% of 21 decks +2% synergy
Enchantments
Mana Echoes
38% of 8 decks +37% synergy
Planeswalkers
Karn, the Great Creator
47% of 19 decks +46% synergy
Tezzeret, Artifice Master
43% of 7 decks +42% synergy
Tezzeret the Seeker
43% of 7 decks +42% synergy
Ugin, the Ineffable
37% of 19 decks +35% synergy
Ugin, the Spirit Dragon
24% of 21 decks +22% synergy
Karn Liberated
19% of 21 decks +19% synergy
Karn, Scion of Urza
16% of 19 decks +15% synergy
Utility Lands
Urza's Workshop
50% of 10 decks +49% synergy
Inventors' Fair
48% of 21 decks +44% synergy
Seat of the Synod
43% of 7 decks +40% synergy
Darksteel Citadel
43% of 21 decks +39% synergy
Reliquary Tower
43% of 21 decks +14% synergy
Urza's Tower
38% of 21 decks +36% synergy
Urza's Saga
35% of 17 decks +28% synergy
Shrine of the Forsaken Gods
33% of 21 decks +32% synergy
Arcane Lighthouse
33% of 21 decks +32% synergy
Urza's Power Plant
33% of 21 decks +32% synergy
Urza's Mine
33% of 21 decks +32% synergy
Temple of the False God
33% of 21 decks +24% synergy
Zhalfirin Void
26% of 19 decks +25% synergy
Homeward Path
24% of 21 decks +22% synergy
Rogue's Passage
24% of 21 decks +5% synergy
War Room
22% of 18 decks +16% synergy
Karn's Bastion
21% of 19 decks +16% synergy
Field of Ruin
20% of 20 decks +18% synergy
Sanctum of Ugin
19% of 21 decks +18% synergy
Mikokoro, Center of the Sea
19% of 21 decks +17% synergy
Strip Mine
19% of 21 decks +16% synergy
High Market
19% of 21 decks +16% synergy
Geier Reach Sanitarium
19% of 21 decks +15% synergy
Ancient Tomb
19% of 21 decks +8% synergy
Treasure Vault
19% of 16 decks +16% synergy
Tyrite Sanctum
18% of 17 decks +16% synergy
Bonders' Enclave
17% of 18 decks +14% synergy
Arch of Orazca
15% of 20 decks +14% synergy
Gods' Eye, Gate to the Reikai
14% of 21 decks +14% synergy
Untaidake, the Cloud Keeper
14% of 21 decks +14% synergy
Miren, the Moaning Well
14% of 21 decks +14% synergy
Sea Gate Wreckage
14% of 21 decks +14% synergy
Mage-Ring Network
14% of 21 decks +14% synergy
Hall of the Bandit Lord
14% of 21 decks +14% synergy
Tomb of the Spirit Dragon
14% of 21 decks +13% synergy
Thespian's Stage
14% of 21 decks +12% synergy
Command Beacon
14% of 21 decks +10% synergy
Mana Artifacts
Sol Ring
90% of 21 decks +6% synergy
Dimir Signet
75% of 4 decks +67% synergy
Liquimetal Torque
35% of 17 decks +32% synergy
Dreamstone Hedron
33% of 21 decks +32% synergy
Mind Stone
29% of 21 decks +11% synergy
Chromatic Orrery
28% of 18 decks +26% synergy
Arcane Signet
26% of 19 decks -45% synergy
Decanter of Endless Water
21% of 14 decks +16% synergy
Worn Powerstone
19% of 21 decks +16% synergy
Mana Vault
19% of 21 decks +13% synergy
Darksteel Ingot
14% of 21 decks +13% synergy
Caged Sun
14% of 21 decks +12% synergy
Mana Crypt
14% of 21 decks +3% synergy
Commander's Sphere
14% of 21 decks -1% synergy
Thought Vessel
14% of 21 decks -2% synergy
Lands
Shivan Reef
75% of 4 decks +69% synergy
Drowned Catacomb
75% of 4 decks +69% synergy
Steam Vents
75% of 4 decks +66% synergy
Watery Grave
75% of 4 decks +65% synergy
Command Tower
24% of 21 decks -50% synergy
Myriad Landscape
19% of 21 decks -1% synergy