Retribution of the Ancients + Phyrexian Altar + Geralf's Messenger

Retribution of the Ancients
Phyrexian Altar
Geralf's Messenger

Requires
All permanents on the battlefield. Geralf's Messenger has no +1/+1 counters on it.
Steps
  1. Activate Phyrexian Altar by sacrificing Geralf's Messenger, adding b.
  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, causing an opponent to lose 2 life.
  4. Activate Retribution of the Ancients by paying b and removing a +1/+1 counter from Geralf's Messenger, giving any creature -1/-1 until end of turn.
  5. Repeat.
Results
Infinite ETB. Infinite LTB. Infinite death triggers. Infinite sacrifice triggers. Infinite lifeloss. Reduce any number of target creatures' toughness to zero.

Top Commanders (3)
Mikaeus, the Unhallowed
1.76% of 968 decks 17 decks
Ghave, Guru of Spores
0.29% of 5531 decks 16 decks
Yawgmoth, Thran Physician
0.11% of 5312 decks 6 decks
High Synergy Cards (10)
Young Wolf
74% of 23 decks +74% synergy
Flayer of the Hatebound
71% of 7 decks +71% synergy
Elas il-Kor, Sadistic Pilgrim
73% of 11 decks +70% synergy
Strangleroot Geist
70% of 23 decks +69% synergy
Cathars' Crusade
67% of 21 decks +63% synergy
Good-Fortune Unicorn
63% of 19 decks +63% synergy
Rakdos Charm
57% of 7 decks +54% synergy
Goblin Bombardment
57% of 7 decks +54% synergy
Zulaport Cutthroat
59% of 64 decks +54% synergy
Diregraf Captain
55% of 11 decks +53% synergy
Top Cards (10)
Ashnod's Altar
73% of 64 decks +65% synergy
Blood Artist
59% of 64 decks +53% synergy
Terminate
57% of 7 decks +52% synergy
Swords to Plowshares
57% of 21 decks +29% synergy
Farseek
57% of 23 decks +41% synergy
Carrion Feeder
55% of 64 decks +52% synergy
Viscera Seer
55% of 64 decks +49% synergy
Necroduality
50% of 10 decks +49% synergy
Mikaeus, the Unhallowed
48% of 64 decks +47% synergy
Slimefoot, the Stowaway
48% of 23 decks +47% synergy
Creatures (50)
Corpsejack Menace
48% of 23 decks +47% synergy
Corpse Knight
48% of 21 decks +46% synergy
Kitchen Finks
47% of 19 decks +47% synergy
Gravecrawler
47% of 64 decks +45% synergy
Pitiless Plunderer
45% of 64 decks +42% synergy
Conclave Mentor
44% of 18 decks +44% synergy
Murderous Redcap
43% of 7 decks +43% synergy
Cruel Celebrant
43% of 21 decks +41% synergy
Purphoros, God of the Forge
43% of 7 decks +40% synergy
Gray Merchant of Asphodel
42% of 64 decks +37% synergy
Juniper Order Ranger
42% of 19 decks +42% synergy
Geralf, Visionary Stitcher
40% of 10 decks +39% synergy
Overcharged Amalgam
40% of 10 decks +39% synergy
Devoted Druid
39% of 23 decks +38% synergy
Grimgrin, Corpse-Born
36% of 11 decks +36% synergy
Luminous Broodmoth
35% of 20 decks +34% synergy
Birds of Paradise
35% of 23 decks +23% synergy
Butcher Ghoul
34% of 64 decks +34% synergy
Grim Haruspex
33% of 64 decks +30% synergy
Walking Ballista
33% of 64 decks +30% synergy
Triskelion
31% of 64 decks +31% synergy
Utopia Mycon
30% of 23 decks +30% synergy
Ivy Lane Denizen
30% of 23 decks +30% synergy
Renata, Called to the Hunt
30% of 23 decks +29% synergy
Champion of Lambholt
30% of 23 decks +27% synergy
Wilhelt, the Rotcleaver
30% of 10 decks +29% synergy
Hordewing Skaab
30% of 10 decks +29% synergy
Esper Sentinel
30% of 20 decks +20% synergy
Bennie Bracks, Zoologist
29% of 14 decks +28% synergy
Mentor of the Meek
29% of 21 decks +25% synergy
Sidisi, Undead Vizier
28% of 64 decks +27% synergy
River Kelpie
27% of 11 decks +27% synergy
Havengul Lich
27% of 11 decks +27% synergy
Bloodspore Thrinax
26% of 23 decks +26% synergy
Woodfall Primus
26% of 23 decks +25% synergy
Winding Constrictor
26% of 23 decks +25% synergy
Mycoloth
26% of 23 decks +25% synergy
Fertilid
26% of 23 decks +25% synergy
Eternal Witness
26% of 23 decks +15% synergy
Putrid Goblin
25% of 64 decks +25% synergy
Nemata, Primeval Warden
25% of 12 decks +24% synergy
Pawn of Ulamog
25% of 64 decks +24% synergy
Yawgmoth, Thran Physician
25% of 64 decks +23% synergy
Cryptic Trilobite
24% of 62 decks +24% synergy
Puppeteer Clique
23% of 64 decks +23% synergy
Chatterfang, Squirrel General
23% of 22 decks +22% synergy
Plague Belcher
22% of 64 decks +21% synergy
Crypt Ghast
22% of 64 decks +19% synergy
Reyhan, Last of the Abzan
22% of 23 decks +21% synergy
Mazirek, Kraul Death Priest
22% of 23 decks +21% synergy
Instants (37)
Assassin's Trophy
48% of 23 decks +42% synergy
Vampiric Tutor
44% of 64 decks +34% synergy
Dark Ritual
44% of 64 decks +33% synergy
Beast Within
35% of 23 decks +15% synergy
Anguished Unmaking
33% of 21 decks +28% synergy
Arcane Denial
27% of 11 decks +18% synergy
Counterspell
27% of 11 decks +6% synergy
Eladamri's Call
26% of 19 decks +23% synergy
Worldly Tutor
26% of 23 decks +19% synergy
Culling the Weak
25% of 64 decks +23% synergy
Village Rites
25% of 61 decks +19% synergy
Enlightened Tutor
24% of 21 decks +15% synergy
Teferi's Protection
24% of 21 decks +14% synergy
Path to Exile
24% of 21 decks +6% synergy
Entomb
23% of 64 decks +20% synergy
Abrupt Decay
17% of 23 decks +15% synergy
Infernal Grasp
17% of 59 decks +12% synergy
Deadly Rollick
16% of 61 decks +12% synergy
Abzan Charm
16% of 19 decks +15% synergy
Tragic Slip
16% of 64 decks +14% synergy
Cabal Ritual
16% of 64 decks +13% synergy
Malakir Rebirth
13% of 61 decks +8% synergy
Inspiring Call
13% of 23 decks +10% synergy
Putrefy
13% of 23 decks +9% synergy
Nature's Claim
13% of 23 decks +7% synergy
Heroic Intervention
13% of 23 decks -0% synergy
Deadly Dispute
12% of 59 decks +7% synergy
Go for the Throat
11% of 64 decks +8% synergy
Defile
9% of 64 decks +8% synergy
Rain of Filth
8% of 64 decks +7% synergy
Snuff Out
8% of 64 decks +7% synergy
Reckoner's Bargain
7% of 44 decks +6% synergy
Baleful Mastery
7% of 61 decks +5% synergy
Wake the Dead
6% of 64 decks +6% synergy
Imp's Mischief
6% of 64 decks +5% synergy
Sudden Spoiling
6% of 64 decks +5% synergy
Doom Blade
6% of 64 decks +5% synergy
Sorceries (40)
Demonic Tutor
56% of 64 decks +43% synergy
Cultivate
43% of 23 decks +21% synergy
Three Visits
39% of 23 decks +28% synergy
Reanimate
36% of 64 decks +29% synergy
Nature's Lore
30% of 23 decks +17% synergy
Diabolic Intent
30% of 64 decks +25% synergy
Damnation
30% of 64 decks +25% synergy
Victimize
30% of 64 decks +24% synergy
Feed the Swarm
30% of 61 decks +20% synergy
Grim Tutor
27% of 64 decks +24% synergy
Rampant Growth
26% of 23 decks +10% synergy
Sign in Blood
23% of 64 decks +18% synergy
Toxic Deluge
23% of 64 decks +15% synergy
Kodama's Reach
22% of 23 decks +6% synergy
Drown in Ichor
21% of 14 decks +20% synergy
Damn
20% of 20 decks +16% synergy
Buried Alive
19% of 64 decks +16% synergy
Exsanguinate
17% of 64 decks +14% synergy
Living Death
17% of 64 decks +14% synergy
Dig Up
14% of 21 decks +13% synergy
Merciless Eviction
14% of 21 decks +13% synergy
Night's Whisper
14% of 64 decks +9% synergy
Bala Ged Recovery
14% of 22 decks +8% synergy
Unearth
12% of 64 decks +11% synergy
Diabolic Tutor
12% of 64 decks +9% synergy
Read the Bones
12% of 64 decks +8% synergy
Profane Tutor
11% of 61 decks +9% synergy
Bubbling Muck
11% of 64 decks +10% synergy
Torment of Hailfire
11% of 64 decks +8% synergy
Unmarked Grave
10% of 61 decks +8% synergy
Zombie Apocalypse
9% of 64 decks +9% synergy
Dread Return
9% of 64 decks +7% synergy
Persist
8% of 60 decks +7% synergy
Agadeem's Awakening
8% of 61 decks +6% synergy
Beseech the Queen
8% of 64 decks +7% synergy
Black Sun's Zenith
8% of 64 decks +7% synergy
Army of the Damned
8% of 64 decks +7% synergy
Dead of Winter
6% of 64 decks +6% synergy
Mutilate
6% of 64 decks +5% synergy
Rise of the Dark Realms
6% of 64 decks +5% synergy
Utility Artifacts (20)
Skullclamp
38% of 64 decks +24% synergy
Altar of Dementia
34% of 64 decks +31% synergy
Lightning Greaves
27% of 64 decks +1% synergy
Blasting Station
25% of 64 decks +24% synergy
Jet Medallion
25% of 64 decks +23% synergy
Bontu's Monument
22% of 64 decks +20% synergy
Bolas's Citadel
22% of 64 decks +16% synergy
Birthing Pod
17% of 23 decks +16% synergy
Cauldron of Souls
14% of 64 decks +13% synergy
Swiftfoot Boots
14% of 64 decks -14% synergy
The Ozolith
13% of 61 decks +10% synergy
Nim Deathmantle
12% of 64 decks +12% synergy
Expedition Map
12% of 64 decks +8% synergy
Altar of the Brood
11% of 64 decks +10% synergy
Sensei's Divining Top
9% of 64 decks +3% synergy
Illusionist's Bracers
8% of 64 decks +6% synergy
Aetherflux Reservoir
8% of 64 decks +3% synergy
Desecrated Tomb
6% of 64 decks +6% synergy
Mindcrank
6% of 64 decks +5% synergy
Urza's Incubator
6% of 64 decks +4% synergy
Enchantments (40)
Parallel Lives
48% of 23 decks +45% synergy
Rooftop Storm
45% of 11 decks +44% synergy
Hardened Scales
43% of 23 decks +40% synergy
Aura Shards
42% of 19 decks +40% synergy
Doubling Season
39% of 23 decks +35% synergy
Anointed Procession
38% of 21 decks +34% synergy
Grave Pact
36% of 64 decks +34% synergy
Fecundity
30% of 23 decks +30% synergy
Bastion of Remembrance
28% of 61 decks +24% synergy
The Meathook Massacre
27% of 59 decks +24% synergy
Dictate of Erebos
27% of 64 decks +24% synergy
Black Market Connections
24% of 38 decks +18% synergy
Phyrexian Arena
23% of 64 decks +16% synergy
Branching Evolution
23% of 22 decks +21% synergy
Animate Dead
22% of 64 decks +17% synergy
Cryptolith Rite
22% of 23 decks +20% synergy
Sylvan Library
22% of 23 decks +15% synergy
Necropotence
20% of 64 decks +18% synergy
Moldervine Reclamation
17% of 23 decks +15% synergy
Utopia Sprawl
17% of 23 decks +14% synergy
Black Market
16% of 64 decks +13% synergy
Smothering Tithe
14% of 21 decks +2% synergy
Earthcraft
13% of 23 decks +13% synergy
Deathreap Ritual
13% of 23 decks +12% synergy
Primal Vigor
13% of 23 decks +12% synergy
Growing Rites of Itlimoc
13% of 23 decks +11% synergy
Wild Growth
13% of 23 decks +8% synergy
Nest of Scarabs
11% of 64 decks +11% synergy
Phyrexian Reclamation
11% of 64 decks +9% synergy
Dark Prophecy
9% of 64 decks +9% synergy
Open the Graves
9% of 64 decks +9% synergy
Necromancy
9% of 64 decks +8% synergy
Exquisite Blood
9% of 64 decks +7% synergy
Carnival of Souls
8% of 64 decks +8% synergy
Contamination
8% of 64 decks +8% synergy
Heartless Summoning
6% of 64 decks +6% synergy
Oubliette
6% of 64 decks +6% synergy
No Mercy
6% of 64 decks +5% synergy
Endless Ranks of the Dead
6% of 64 decks +5% synergy
Bloodchief Ascension
6% of 64 decks +5% synergy
Planeswalkers (4)
Vraska, Betrayal's Sting
21% of 14 decks +19% synergy
Liliana, Dreadhorde General
14% of 64 decks +12% synergy
Liliana, Untouched by Death
11% of 64 decks +11% synergy
Liliana of the Dark Realms
11% of 64 decks +10% synergy
Utility Lands (28)
Cabal Coffers
50% of 64 decks +44% synergy
Bojuka Bog
45% of 64 decks +29% synergy
Otawara, Soaring City
43% of 7 decks +34% synergy
Urborg, Tomb of Yawgmoth
42% of 64 decks +31% synergy
Phyrexian Tower
34% of 64 decks +30% synergy
Gavony Township
32% of 19 decks +29% synergy
Tolaria West
27% of 11 decks +26% synergy
Nykthos, Shrine to Nyx
23% of 64 decks +17% synergy
Ancient Tomb
23% of 64 decks +12% synergy
Grim Backwoods
22% of 23 decks +21% synergy
Reliquary Tower
20% of 64 decks -7% synergy
Castle Locthwain
19% of 63 decks +16% synergy
Takenuma, Abandoned Mire
19% of 48 decks +12% synergy
Unholy Grotto
12% of 64 decks +12% synergy
Cabal Stronghold
12% of 64 decks +10% synergy
High Market
12% of 64 decks +9% synergy
Witch's Cottage
11% of 64 decks +9% synergy
Karn's Bastion
11% of 64 decks +6% synergy
Command Beacon
9% of 64 decks +4% synergy
Volrath's Stronghold
8% of 64 decks +7% synergy
Thespian's Stage
8% of 64 decks +5% synergy
Mortuary Mire
8% of 64 decks +5% synergy
Rogue's Passage
8% of 64 decks -10% synergy
Nesting Grounds
7% of 61 decks +5% synergy
Barren Moor
6% of 64 decks +4% synergy
Field of the Dead
6% of 64 decks +3% synergy
Buried Ruin
6% of 64 decks +1% synergy
Temple of the False God
6% of 64 decks -4% synergy
Mana Artifacts (21)
Sol Ring
91% of 64 decks +7% synergy
Talisman of Dominance
82% of 11 decks +75% synergy
Arcane Signet
63% of 63 decks -6% synergy
Dimir Signet
45% of 11 decks +37% synergy
Golgari Signet
22% of 23 decks +19% synergy
Mana Crypt
20% of 64 decks +9% synergy
Jeweled Lotus
18% of 61 decks +10% synergy
Selesnya Signet
16% of 19 decks +14% synergy
Orzhov Signet
14% of 21 decks +7% synergy
Thought Vessel
12% of 64 decks -2% synergy
Commander's Sphere
12% of 64 decks -5% synergy
Mind Stone
12% of 64 decks -6% synergy
Fellwar Stone
12% of 64 decks -8% synergy
Crowded Crypt
10% of 59 decks +9% synergy
Chromatic Lantern
9% of 64 decks +0% synergy
Charcoal Diamond
8% of 64 decks +4% synergy
Lotus Petal
8% of 64 decks +1% synergy
Nyx Lotus
6% of 63 decks +4% synergy
Lotus Bloom
6% of 64 decks +6% synergy
Everflowing Chalice
6% of 64 decks +1% synergy
Mana Vault
6% of 64 decks -0% synergy
Lands (50)
Blood Crypt
86% of 7 decks +77% synergy
Sunken Hollow
82% of 11 decks +73% synergy
Dragonskull Summit
71% of 7 decks +65% synergy
Watery Grave
64% of 11 decks +53% synergy
Bountiful Promenade
63% of 19 decks +58% synergy
Temple Garden
63% of 19 decks +54% synergy
Overgrown Tomb
61% of 23 decks +51% synergy
Badlands
57% of 7 decks +54% synergy
Drowned Catacomb
55% of 11 decks +49% synergy
Sunpetal Grove
53% of 19 decks +48% synergy
Godless Shrine
52% of 21 decks +43% synergy
Woodland Cemetery
52% of 23 decks +47% synergy
Indatha Triome
50% of 18 decks +46% synergy
Command Tower
50% of 64 decks -22% synergy
Tainted Isle
45% of 11 decks +43% synergy
Undergrowth Stadium
45% of 22 decks +40% synergy
Morphic Pool
45% of 11 decks +39% synergy
Vault of Champions
45% of 20 decks +39% synergy
Isolated Chapel
43% of 21 decks +37% synergy
Smoldering Marsh
43% of 7 decks +36% synergy
Sandsteppe Citadel
37% of 19 decks +34% synergy
Fetid Pools
36% of 11 decks +35% synergy
Darkwater Catacombs
36% of 11 decks +33% synergy
Choked Estuary
36% of 11 decks +32% synergy
Temple of Deceit
36% of 11 decks +32% synergy
Deathcap Glade
33% of 21 decks +30% synergy
Canopy Vista
32% of 19 decks +25% synergy
Clearwater Pathway
30% of 10 decks +27% synergy
Branchloft Pathway
28% of 18 decks +26% synergy
Overgrown Farmland
28% of 18 decks +24% synergy
Underground River
27% of 11 decks +23% synergy
Savannah
26% of 19 decks +23% synergy
Bayou
26% of 23 decks +23% synergy
Shattered Sanctum
25% of 20 decks +21% synergy
Tainted Field
24% of 21 decks +21% synergy
Scrubland
24% of 21 decks +21% synergy
Caves of Koilos
24% of 21 decks +18% synergy
Darkbore Pathway
23% of 22 decks +21% synergy
Verdant Catacombs
22% of 64 decks +10% synergy
Twilight Mire
22% of 23 decks +20% synergy
Marsh Flats
17% of 64 decks +5% synergy
Fortified Village
16% of 19 decks +13% synergy
Mana Confluence
16% of 64 decks +8% synergy
Windswept Heath
16% of 64 decks +5% synergy
Evolving Wilds
16% of 64 decks -7% synergy
Fetid Heath
14% of 21 decks +12% synergy
Polluted Delta
14% of 64 decks +3% synergy
Myriad Landscape
14% of 64 decks -8% synergy
Llanowar Wastes
13% of 23 decks +8% synergy
Fabled Passage
13% of 63 decks +2% synergy