Sigarda's Summons + Bishop of Wings + Cathars' Crusade + Ashnod's Altar

Sigarda's Summons
Bishop of Wings
Cathars' Crusade
Ashnod's Altar

Requires
Sigarda's Summons must be on the battlefield. Bishop of Wings must be on the battlefield. Cathars' Crusade must be on the battlefield. Ashnod's Altar must be on the battlefield. You control an additional Angel.
Steps
  1. Activate Ashnod's Altar by sacrificing an Angel, adding cc.
  2. Bishop of Wings triggers, creating a 1/1 Spirit creature token.
  3. The Spirit enters the battlefield, triggering Cathars' Crusade, putting a +1/+1 counter on each creature you control.
  4. The Spirit token becomes a 4/4 Spirit Angel due to having a +1/+1 counter on it.
  5. Activate Ashnod's Altar by sacrificing the Spirit token, adding cc.
  6. Repeat from step 2.
Results
Infinite +1/+1 counters. Infinite colorless mana. Infinite death triggers. Infinite ETB. Infinite LTB. Infinite sacrifice triggers.

Top Commanders (3)
Giada, Font of Hope
0.05% of 15144 decks 7 decks
Elesh Norn, Mother of Machines
0.03% of 5769 decks 2 decks
Ghave, Guru of Spores
0.03% of 6096 decks 2 decks
High Synergy Cards (10)
Path to Exile
79% of 14 decks +59% synergy
Swords to Plowshares
86% of 14 decks +57% synergy
Divine Visitation
57% of 14 decks +56% synergy
Avacyn, Angel of Hope
57% of 14 decks +55% synergy
Herald of War
50% of 14 decks +49% synergy
Righteous Valkyrie
50% of 14 decks +49% synergy
Linvala, Keeper of Silence
50% of 14 decks +49% synergy
Generous Gift
57% of 14 decks +45% synergy
Requiem Angel
43% of 14 decks +43% synergy
Resplendent Angel
43% of 14 decks +42% synergy
Top Cards (10)
Altar of Dementia
64% of 14 decks +61% synergy
Phyrexian Altar
57% of 14 decks +53% synergy
Angel of Vitality
43% of 14 decks +42% synergy
Rebuff the Wicked
43% of 14 decks +42% synergy
Archangel of Thune
43% of 14 decks +42% synergy
Maskwood Nexus
43% of 14 decks +40% synergy
Lightning Greaves
43% of 14 decks +17% synergy
Mondrak, Glory Dominus
40% of 10 decks +35% synergy
Twilight Shepherd
36% of 14 decks +36% synergy
Youthful Valkyrie
36% of 14 decks +35% synergy
Creatures (28)
Starnheim Aspirant
36% of 14 decks +35% synergy
Lyra Dawnbringer
36% of 14 decks +35% synergy
Inspiring Overseer
36% of 14 decks +35% synergy
Emeria Shepherd
36% of 14 decks +34% synergy
Sephara, Sky's Blade
36% of 14 decks +34% synergy
Walking Ballista
36% of 14 decks +33% synergy
Basilica Shepherd
33% of 9 decks +33% synergy
Serra Paragon
33% of 12 decks +33% synergy
Battle Angels of Tyr
31% of 13 decks +29% synergy
Mite Overseer
30% of 10 decks +29% synergy
Basri's Lieutenant
29% of 14 decks +28% synergy
Angel of Jubilation
29% of 14 decks +28% synergy
Bruna, the Fading Light
29% of 14 decks +28% synergy
Valkyrie Harbinger
29% of 14 decks +28% synergy
Angel of Destiny
29% of 14 decks +28% synergy
Grand Abolisher
29% of 14 decks +25% synergy
Antler Skulkin
21% of 14 decks +21% synergy
Magus of the Disk
21% of 14 decks +21% synergy
Pentavus
21% of 14 decks +21% synergy
Cryptic Trilobite
21% of 14 decks +21% synergy
Twilight Drover
21% of 14 decks +21% synergy
Crystalline Crawler
21% of 14 decks +21% synergy
Angelic Skirmisher
21% of 14 decks +21% synergy
Archangel of Tithes
21% of 14 decks +21% synergy
Gisela, the Broken Blade
21% of 14 decks +21% synergy
Speaker of the Heavens
21% of 14 decks +21% synergy
Heliod, Sun-Crowned
21% of 14 decks +20% synergy
Karmic Guide
21% of 14 decks +19% synergy
Instants (8)
Akroma's Will
36% of 14 decks +31% synergy
Teferi's Protection
29% of 14 decks +19% synergy
Mana Tithe
21% of 14 decks +21% synergy
Heliod's Intervention
21% of 14 decks +19% synergy
Return to Dust
21% of 14 decks +19% synergy
Ephemerate
21% of 14 decks +19% synergy
Flawless Maneuver
21% of 14 decks +17% synergy
Enlightened Tutor
21% of 14 decks +13% synergy
Sorceries (6)
Farewell
36% of 14 decks +29% synergy
Starnheim Unleashed
29% of 14 decks +28% synergy
Entreat the Angels
21% of 14 decks +21% synergy
Emeria's Call
21% of 14 decks +20% synergy
Wrath of God
21% of 14 decks +18% synergy
Austere Command
21% of 14 decks +16% synergy
Utility Artifacts (12)
Pearl Medallion
36% of 14 decks +34% synergy
Oketra's Monument
36% of 14 decks +34% synergy
Herald's Horn
36% of 14 decks +30% synergy
Halo Fountain
31% of 13 decks +29% synergy
The Book of Exalted Deeds
29% of 14 decks +28% synergy
Animation Module
21% of 14 decks +21% synergy
Blasting Station
21% of 14 decks +21% synergy
Krark-Clan Ironworks
21% of 14 decks +20% synergy
Nevinyrral's Disk
21% of 14 decks +20% synergy
Alhammarret's Archive
21% of 14 decks +19% synergy
The Ozolith
21% of 14 decks +18% synergy
Swiftfoot Boots
21% of 14 decks -7% synergy
Enchantments (10)
Ajani's Welcome
36% of 14 decks +35% synergy
Darksteel Mutation
36% of 14 decks +33% synergy
Smothering Tithe
36% of 14 decks +24% synergy
Angelic Accord
29% of 14 decks +28% synergy
Anointed Procession
29% of 14 decks +24% synergy
Together Forever
21% of 14 decks +21% synergy
Cleric Class
21% of 14 decks +20% synergy
Sphere of Safety
21% of 14 decks +19% synergy
Land Tax
21% of 14 decks +18% synergy
Ghostly Prison
21% of 14 decks +16% synergy
Planeswalkers (2)
Serra the Benevolent
29% of 14 decks +28% synergy
Elspeth Resplendent
23% of 13 decks +22% synergy
Utility Lands (10)
Emeria, the Sky Ruin
50% of 14 decks +48% synergy
Nykthos, Shrine to Nyx
43% of 14 decks +37% synergy
Reliquary Tower
36% of 14 decks +7% synergy
Seraph Sanctuary
29% of 14 decks +28% synergy
Lotus Field
29% of 14 decks +27% synergy
Castle Ardenvale
29% of 14 decks +26% synergy
Hall of Heliod's Generosity
29% of 14 decks +25% synergy
Eiganjo, Seat of the Empire
29% of 14 decks +24% synergy
Secluded Steppe
21% of 14 decks +20% synergy
War Room
21% of 14 decks +15% synergy
Mana Artifacts (3)
Sol Ring
79% of 14 decks -6% synergy
Arcane Signet
50% of 14 decks -21% synergy
Nyx Lotus
21% of 14 decks +20% synergy
Lands (5)
Path of Ancestry
36% of 14 decks +16% synergy
Flagstones of Trokair
29% of 14 decks +28% synergy
Command Tower
29% of 14 decks -44% synergy
Cavern of Souls
21% of 14 decks +15% synergy
Myriad Landscape
21% of 14 decks +0% synergy