Cathars' Crusade + Aerie Ouphes

Cathars' Crusade
Aerie Ouphes

Requires
Cathars' Crusade must be on the battlefield. Aerie Ouphes must be on the battlefield. An additional creature with flying and indestructible on the battlefield.
Steps
  1. Activate Aerie Ouphes' ability by sacrificing itself to deal 4 damage to the creature with flying and indestructible.
  2. Aerie Ouphes's Persist ability triggers, returning Aerie Ouphes from your graveyard to the battlefield with a -1/-1 counter on it.
  3. Cathars' Crusade triggers, putting a +1/+1 counter on all creatures you control.
  4. The -1/-1 counter and +1/+1 counter on Aerie Ouphes are removed as a state-based action.
  5. Repeat.
Results
Infinite +1/+1 counters on all creatures you control except Aerie Ouphes. Infinite death triggers. Infinite ETB. Infinite LTB. Infinite sacrifice triggers.

Top Commanders (3)
Falco Spara, Pactweaver
0.16% of 5085 decks 8 decks
Shalai and Hallar
0.10% of 6858 decks 7 decks
Ghave, Guru of Spores
0.10% of 6160 decks 6 decks
High Synergy Cards (2)
Grumgully, the Generous
82% of 22 decks +81% synergy
Murderous Redcap
75% of 8 decks +75% synergy
Top Cards (10)
Rhythm of the Wild
70% of 23 decks +64% synergy
Kitchen Finks
66% of 71 decks +66% synergy
Putrid Goblin
66% of 29 decks +65% synergy
Puppeteer Clique
66% of 29 decks +65% synergy
River Kelpie
63% of 19 decks +63% synergy
Glen Elendra Archmage
63% of 19 decks +62% synergy
Viscera Seer
62% of 29 decks +57% synergy
Goblin Bombardment
61% of 23 decks +58% synergy
Rendclaw Trow
59% of 29 decks +59% synergy
Good-Fortune Unicorn
58% of 71 decks +57% synergy
Creatures (50)
Galadriel, Light of Valinor
75% of 4 decks +74% synergy
Master Biomancer
53% of 19 decks +52% synergy
The Red Terror
50% of 14 decks +50% synergy
Restless Apparition
48% of 29 decks +48% synergy
Carrion Feeder
48% of 29 decks +45% synergy
Kami of Whispered Hopes
48% of 29 decks +44% synergy
Grazing Kelpie
47% of 19 decks +47% synergy
Safehold Elite
46% of 71 decks +46% synergy
Heartmender
44% of 71 decks +44% synergy
Elas il-Kor, Sadistic Pilgrim
43% of 21 decks +40% synergy
Lingering Tormentor
41% of 29 decks +41% synergy
Zulaport Cutthroat
41% of 29 decks +36% synergy
Gravelgill Axeshark
40% of 10 decks +40% synergy
Arwen, Weaver of Hope
38% of 21 decks +36% synergy
Fathom Mage
37% of 19 decks +36% synergy
Juniper Order Ranger
37% of 71 decks +36% synergy
Scurry Oak
35% of 69 decks +34% synergy
Cruel Celebrant
34% of 29 decks +32% synergy
Blood Artist
34% of 29 decks +28% synergy
Renata, Called to the Hunt
34% of 70 decks +33% synergy
Woodfall Primus
34% of 71 decks +33% synergy
Ivy Lane Denizen
34% of 71 decks +33% synergy
Pitiless Plunderer
31% of 29 decks +27% synergy
Devoted Druid
30% of 71 decks +28% synergy
Gyre Sage
30% of 71 decks +28% synergy
Champion of Lambholt
30% of 71 decks +26% synergy
Herd Baloth
29% of 69 decks +28% synergy
Incubation Druid
28% of 71 decks +26% synergy
Solphim, Mayhem Dominus
27% of 11 decks +24% synergy
Kithkin Spellduster
27% of 71 decks +27% synergy
Lesser Masticore
27% of 71 decks +27% synergy
Woe Strider
26% of 27 decks +24% synergy
Twilight Shepherd
25% of 71 decks +25% synergy
Corpse Knight
25% of 28 decks +24% synergy
Butcher Ghoul
24% of 29 decks +24% synergy
Mikaeus, the Unhallowed
24% of 29 decks +23% synergy
Melira, Sylvok Outcast
24% of 71 decks +24% synergy
Rishkar, Peema Renegade
24% of 71 decks +22% synergy
Eternal Witness
24% of 71 decks +13% synergy
Conclave Mentor
23% of 69 decks +22% synergy
Kutzil, Malamet Exemplar
23% of 13 decks +18% synergy
Rocco, Cabaretti Caterer
23% of 22 decks +22% synergy
Birds of Paradise
23% of 71 decks +11% synergy
Denry Klin, Editor in Chief
22% of 18 decks +22% synergy
Scuzzback Marauders
22% of 23 decks +22% synergy
War Elemental
22% of 23 decks +22% synergy
Thermopod
22% of 23 decks +22% synergy
Krenko, Tin Street Kingpin
22% of 23 decks +19% synergy
Syr Konrad, the Grim
21% of 28 decks +17% synergy
Bloodspore Thrinax
21% of 71 decks +21% synergy
Instants (37)
Swords to Plowshares
44% of 71 decks +15% synergy
Beast Within
39% of 71 decks +20% synergy
Boros Charm
35% of 23 decks +29% synergy
Chaos Warp
35% of 23 decks +19% synergy
Assassin's Trophy
31% of 29 decks +25% synergy
Inspiring Call
28% of 71 decks +25% synergy
Path to Exile
28% of 71 decks +9% synergy
Generous Gift
25% of 71 decks +13% synergy
Eladamri's Call
21% of 71 decks +18% synergy
Heroic Intervention
21% of 71 decks +8% synergy
Cauldron Haze
21% of 29 decks +21% synergy
Anguished Unmaking
21% of 29 decks +15% synergy
Worldly Tutor
20% of 71 decks +13% synergy
Enlightened Tutor
18% of 71 decks +10% synergy
Naya Charm
17% of 23 decks +16% synergy
Vampiric Tutor
17% of 29 decks +7% synergy
Counterspell
16% of 19 decks -5% synergy
Mythos of Nethroi
15% of 27 decks +14% synergy
Deadly Dispute
15% of 27 decks +9% synergy
Abrupt Decay
14% of 29 decks +11% synergy
Putrefy
14% of 29 decks +10% synergy
First Day of Class
14% of 22 decks +14% synergy
Unbreakable Formation
13% of 71 decks +9% synergy
Krosan Grip
11% of 71 decks +7% synergy
Teferi's Protection
11% of 71 decks +2% synergy
Village Rites
11% of 27 decks +6% synergy
Abzan Charm
10% of 29 decks +10% synergy
Despark
10% of 29 decks +6% synergy
Chord of Calling
8% of 71 decks +6% synergy
Contractual Safeguard
8% of 65 decks +7% synergy
Silkguard
8% of 65 decks +7% synergy
Sejiri Shelter
7% of 69 decks +5% synergy
Shared Summons
7% of 70 decks +6% synergy
Return of the Wildspeaker
7% of 70 decks +1% synergy
Nature's Claim
7% of 71 decks +2% synergy
Flawless Maneuver
6% of 69 decks +2% synergy
Congregation at Dawn
6% of 71 decks +5% synergy
Sorceries (41)
Cultivate
38% of 71 decks +16% synergy
Nature's Lore
37% of 71 decks +22% synergy
Farseek
37% of 71 decks +21% synergy
Kodama's Reach
32% of 71 decks +17% synergy
Rampant Growth
32% of 71 decks +16% synergy
Three Visits
27% of 71 decks +15% synergy
Damning Verdict
25% of 65 decks +24% synergy
Tezzeret's Gambit
21% of 19 decks +19% synergy
Demonic Tutor
21% of 29 decks +8% synergy
Eerie Ultimatum
19% of 27 decks +17% synergy
Diabolic Tutor
17% of 29 decks +14% synergy
Neoform
16% of 19 decks +15% synergy
Ponder
16% of 19 decks +9% synergy
Damn
15% of 27 decks +11% synergy
Unnatural Restoration
14% of 35 decks +12% synergy
Grim Tutor
14% of 29 decks +11% synergy
Victimize
14% of 29 decks +8% synergy
Blasphemous Act
13% of 23 decks -3% synergy
Green Sun's Zenith
11% of 71 decks +8% synergy
Shamanic Revelation
11% of 71 decks +6% synergy
Rite of Oblivion
11% of 27 decks +10% synergy
Diabolic Intent
10% of 29 decks +6% synergy
Damnation
10% of 29 decks +6% synergy
Night's Whisper
10% of 29 decks +6% synergy
Sign in Blood
10% of 29 decks +5% synergy
Toxic Deluge
10% of 29 decks +2% synergy
Bala Ged Recovery
10% of 69 decks +5% synergy
Cleansing Nova
10% of 71 decks +8% synergy
Thirsting Roots
9% of 35 decks +7% synergy
Eldritch Evolution
8% of 71 decks +6% synergy
Wrath of God
8% of 71 decks +5% synergy
Vanquish the Horde
7% of 68 decks +5% synergy
Into the North
7% of 71 decks +6% synergy
Idyllic Tutor
7% of 71 decks +4% synergy
Skyshroud Claim
7% of 71 decks +2% synergy
Rishkar's Expertise
7% of 71 decks +2% synergy
Austere Command
7% of 71 decks +1% synergy
Farewell
6% of 65 decks -0% synergy
Explosive Vegetation
6% of 71 decks +4% synergy
Harmonize
6% of 71 decks +1% synergy
Ascend from Avernus
5% of 56 decks +4% synergy
Utility Artifacts (23)
Ashnod's Altar
56% of 71 decks +48% synergy
Altar of Dementia
45% of 71 decks +42% synergy
Phyrexian Altar
39% of 71 decks +35% synergy
Blasting Station
34% of 71 decks +33% synergy
Ozolith, the Shattered Spire
28% of 29 decks +24% synergy
Andúril, Narsil Reforged
25% of 12 decks +23% synergy
The Ozolith
20% of 69 decks +17% synergy
The Great Henge
20% of 70 decks +15% synergy
Cauldron of Souls
17% of 71 decks +16% synergy
Skullclamp
17% of 71 decks +4% synergy
Swiftfoot Boots
14% of 71 decks -14% synergy
Birthing Pod
11% of 71 decks +10% synergy
Lightning Greaves
11% of 71 decks -14% synergy
Altar of the Brood
10% of 71 decks +9% synergy
The One Ring
9% of 33 decks +0% synergy
Animation Module
7% of 71 decks +7% synergy
Sword of Truth and Justice
7% of 71 decks +6% synergy
Sensei's Divining Top
7% of 71 decks +1% synergy
Spawning Pit
6% of 71 decks +5% synergy
Contagion Engine
6% of 71 decks +5% synergy
Staff of Domination
6% of 71 decks +4% synergy
Lifecrafter's Bestiary
6% of 71 decks +3% synergy
Basilisk Collar
6% of 71 decks +2% synergy
Enchantments (43)
All Will Be One
55% of 11 decks +53% synergy
Tribute to the World Tree
45% of 33 decks +41% synergy
Hardened Scales
41% of 71 decks +37% synergy
Impact Tremors
39% of 23 decks +35% synergy
Bastion of Remembrance
37% of 27 decks +34% synergy
Uncivil Unrest
36% of 11 decks +35% synergy
Thran Vigil
35% of 17 decks +35% synergy
Master Chef
25% of 55 decks +25% synergy
Aura Shards
23% of 71 decks +20% synergy
Mystic Remora
21% of 19 decks +12% synergy
Rhystic Study
21% of 19 decks +7% synergy
Abzan Ascendancy
21% of 29 decks +20% synergy
Moldervine Reclamation
18% of 28 decks +16% synergy
Mayael's Aria
17% of 23 decks +17% synergy
Felidar Retreat
17% of 69 decks +14% synergy
Brokers Ascendancy
17% of 18 decks +16% synergy
Simic Ascendancy
16% of 19 decks +15% synergy
Smothering Tithe
15% of 71 decks +4% synergy
Greater Good
14% of 71 decks +12% synergy
Doubling Season
14% of 71 decks +10% synergy
Guardian Project
14% of 71 decks +10% synergy
Pandemonium
13% of 23 decks +13% synergy
Mana Echoes
13% of 23 decks +12% synergy
Solemnity
13% of 71 decks +12% synergy
Path of Discovery
11% of 71 decks +11% synergy
Evolutionary Leap
11% of 71 decks +10% synergy
Mirari's Wake
11% of 71 decks +8% synergy
Death's Oasis
11% of 27 decks +11% synergy
Resourceful Defense
11% of 65 decks +10% synergy
Journey to Eternity
10% of 29 decks +10% synergy
Rite of Passage
10% of 71 decks +10% synergy
Fecundity
10% of 71 decks +9% synergy
Sylvan Library
10% of 71 decks +4% synergy
Fanatical Devotion
8% of 71 decks +8% synergy
Death's Presence
8% of 71 decks +8% synergy
Tocasia's Welcome
8% of 40 decks +5% synergy
Branching Evolution
7% of 69 decks +5% synergy
Martyr's Cause
7% of 71 decks +7% synergy
Primal Vigor
7% of 71 decks +6% synergy
Wilderness Reclamation
7% of 71 decks +5% synergy
Anointed Procession
7% of 71 decks +3% synergy
Angelic Renewal
6% of 71 decks +5% synergy
Parallel Lives
6% of 71 decks +2% synergy
Planeswalkers (3)
Jiang Yanggu, Wildcrafter
10% of 71 decks +9% synergy
Basri Ket
7% of 69 decks +7% synergy
Nissa, Voice of Zendikar
7% of 71 decks +6% synergy
Utility Lands (18)
Gavony Township
32% of 71 decks +30% synergy
Karn's Bastion
23% of 71 decks +17% synergy
Yavimaya, Cradle of Growth
19% of 69 decks +10% synergy
Oran-Rief, the Vastwood
15% of 71 decks +13% synergy
Grim Backwoods
14% of 29 decks +13% synergy
Bojuka Bog
14% of 29 decks -2% synergy
Boseiju, Who Endures
14% of 66 decks +4% synergy
Reliquary Tower
13% of 71 decks -16% synergy
Ancient Tomb
11% of 71 decks +0% synergy
Phyrexian Tower
10% of 29 decks +6% synergy
Nesting Grounds
10% of 69 decks +9% synergy
Mosswort Bridge
10% of 71 decks +5% synergy
Llanowar Reborn
7% of 71 decks +6% synergy
Gaea's Cradle
7% of 71 decks +4% synergy
Temple of the False God
7% of 71 decks -3% synergy
Secluded Steppe
6% of 71 decks +4% synergy
Tranquil Thicket
6% of 71 decks +4% synergy
Rogue's Passage
6% of 71 decks -13% synergy
Mana Artifacts (14)
Sol Ring
89% of 71 decks +4% synergy
Arcane Signet
67% of 70 decks -4% synergy
Selesnya Signet
32% of 71 decks +30% synergy
Golgari Signet
28% of 29 decks +25% synergy
Orzhov Signet
28% of 29 decks +21% synergy
Simic Signet
26% of 19 decks +23% synergy
Azorius Signet
21% of 19 decks +15% synergy
Gruul Signet
17% of 23 decks +15% synergy
Boros Signet
17% of 23 decks +12% synergy
Talisman of Curiosity
16% of 19 decks +13% synergy
Chromatic Lantern
14% of 71 decks +5% synergy
Commander's Sphere
14% of 71 decks -3% synergy
Fellwar Stone
14% of 71 decks -7% synergy
Talisman of Unity
8% of 71 decks +7% synergy
Lands (50)
Command Tower
76% of 71 decks +3% synergy
Blood Crypt
62% of 8 decks +53% synergy
Temple Garden
61% of 71 decks +52% synergy
Indatha Triome
59% of 27 decks +56% synergy
Overgrown Tomb
59% of 29 decks +49% synergy
Savai Triome
57% of 7 decks +54% synergy
Steam Vents
57% of 7 decks +48% synergy
Stomping Ground
57% of 23 decks +47% synergy
Sacred Foundry
52% of 23 decks +44% synergy
Ketria Triome
50% of 6 decks +46% synergy
Spara's Headquarters
50% of 18 decks +46% synergy
Watery Grave
50% of 10 decks +39% synergy
Sandsteppe Citadel
48% of 29 decks +45% synergy
Godless Shrine
48% of 29 decks +39% synergy
Canopy Vista
45% of 71 decks +37% synergy
Zagoth Triome
44% of 9 decks +41% synergy
Ziatora's Proving Ground
43% of 7 decks +39% synergy
Seaside Citadel
42% of 19 decks +39% synergy
Breeding Pool
42% of 19 decks +33% synergy
Hallowed Fountain
42% of 19 decks +33% synergy
Jetmir's Garden
36% of 22 decks +32% synergy
Jungle Shrine
35% of 23 decks +31% synergy
Prairie Stream
32% of 19 decks +24% synergy
Windswept Heath
31% of 71 decks +21% synergy
Cinder Glade
30% of 23 decks +22% synergy
Bountiful Promenade
30% of 71 decks +24% synergy
Exotic Orchard
30% of 71 decks -5% synergy
Sunpetal Grove
28% of 71 decks +23% synergy
Woodland Cemetery
28% of 29 decks +22% synergy
Spectator Seating
27% of 22 decks +22% synergy
Glacial Fortress
26% of 19 decks +21% synergy
Undergrowth Stadium
26% of 27 decks +20% synergy
Temple of Plenty
25% of 71 decks +23% synergy
Fortified Village
24% of 71 decks +21% synergy
Idyllic Beachfront
23% of 13 decks +22% synergy
Tangled Islet
23% of 13 decks +21% synergy
Evolving Wilds
23% of 71 decks +1% synergy
Vault of Champions
22% of 27 decks +16% synergy
Plateau
22% of 23 decks +19% synergy
Taiga
22% of 23 decks +19% synergy
Hinterland Harbor
21% of 19 decks +16% synergy
Sea of Clouds
21% of 19 decks +15% synergy
Golgari Rot Farm
21% of 29 decks +17% synergy
Llanowar Wastes
21% of 29 decks +16% synergy
Krosan Verge
20% of 71 decks +17% synergy
Selesnya Sanctuary
20% of 71 decks +17% synergy
Terramorphic Expanse
20% of 71 decks +4% synergy
Overgrown Farmland
19% of 68 decks +16% synergy
Sungrass Prairie
18% of 71 decks +16% synergy
Savannah
18% of 71 decks +15% synergy