Cloudstone Curio + Ugin, the Ineffable + Herald of Kozilek

Cloudstone Curio
Ugin, the Ineffable
Herald of Kozilek

Requires
Cloudstone Curio must be on the battlefield. Ugin, the Ineffable must be on the battlefield. Herald of Kozilek must be on the battlefield. You control a nontoken creature with morph or megamorph. You have a creature card with morph or megamorph in your hand.
Steps
  1. Cast the creature card with morph or megamorph from your hand for its morph cost by paying 0.
  2. Whenever the face-down creature enters the battlefield, Cloudstone Curio triggers, returning another creature with morph or megamorph to your hand from the battlefield.
  3. Repeat.
Results
Infinite ETB. Infinite LTB. Infinite storm count.

Morophon, the Boundless
0.53% of 9938 decks 53 decks
Ulalek, Fused Atrocity
0.43% of 11273 decks 48 decks
Animar, Soul of Elements
0.29% of 16060 decks 46 decks
Azlask, the Swelling Scourge
0.08% of 6111 decks 5 decks
Garth One-Eye
0.05% of 4113 decks 2 decks
Yidris, Maelstrom Wielder
0.02% of 6653 decks 1 decks
Intet, the Dreamer
0.11% of 890 decks 1 decks
Surrak Dragonclaw
0.05% of 1892 decks 1 decks
Lord Xander, the Collector
0.03% of 3016 decks 1 decks
Esika, God of the Tree
0.01% of 18169 decks 1 decks
Jodah, Archmage Eternal
0.01% of 8040 decks 1 decks
New Cards
Sire of Seven Deaths
89% of 9 decks +85% synergy
Leyline of Mutation
30% of 10 decks +14% synergy
High Synergy Cards
Eldrazi Temple
88% of 160 decks +86% synergy
Glaring Fleshraker
87% of 75 decks +84% synergy
Conduit of Ruin
84% of 160 decks +83% synergy
All Is Dust
82% of 160 decks +81% synergy
Echoes of Eternity
81% of 79 decks +79% synergy
Sire of Stagnation
78% of 112 decks +75% synergy
Kozilek, Butcher of Truth
77% of 160 decks +75% synergy
Ugin's Binding
76% of 76 decks +75% synergy
Eye of Ugin
75% of 160 decks +74% synergy
Ulamog, the Ceaseless Hunger
74% of 160 decks +73% synergy
Top Cards
Forsaken Monument
74% of 148 decks +73% synergy
Kozilek's Unsealing
72% of 80 decks +70% synergy
Kozilek, the Great Distortion
70% of 160 decks +69% synergy
Artisan of Kozilek
70% of 160 decks +68% synergy
From Beyond
70% of 159 decks +69% synergy
Eldrazi Displacer
68% of 110 decks +67% synergy
Ulamog, the Infinite Gyre
68% of 160 decks +67% synergy
Urza's Incubator
68% of 160 decks +65% synergy
It That Heralds the End
66% of 86 decks +65% synergy
Oblivion Sower
66% of 160 decks +65% synergy
Creatures
Ulamog, the Defiler
65% of 79 decks +63% synergy
Void Winnower
64% of 160 decks +63% synergy
World Breaker
58% of 159 decks +58% synergy
Catacomb Sifter
58% of 111 decks +57% synergy
Spawnbed Protector
57% of 75 decks +56% synergy
Zhulodok, Void Gorger
57% of 116 decks +56% synergy
Nulldrifter
55% of 80 decks +53% synergy
Sowing Mycospawn
54% of 76 decks +52% synergy
Hideous Taskmaster
52% of 79 decks +50% synergy
Flayer of Loyalties
51% of 111 decks +50% synergy
It That Betrays
51% of 160 decks +50% synergy
Forerunner of Slaughter
49% of 112 decks +49% synergy
Emrakul, the Promised End
48% of 160 decks +47% synergy
Deepfathom Skulker
46% of 160 decks +46% synergy
Chittering Dispatcher
45% of 75 decks +43% synergy
Flayer Drone
45% of 112 decks +44% synergy
Roaming Throne
44% of 89 decks +34% synergy
Endbringer
44% of 160 decks +43% synergy
Emrakul, the World Anew
43% of 86 decks +42% synergy
Kozilek, the Broken Reality
42% of 79 decks +41% synergy
Void Grafter
42% of 159 decks +41% synergy
Snapping Voidcraw
40% of 75 decks +35% synergy
Skittering Cicada
40% of 111 decks +39% synergy
Wastescape Battlemage
39% of 75 decks +36% synergy
Brood Monitor
38% of 159 decks +37% synergy
Jodah, Archmage Eternal
36% of 110 decks +32% synergy
Sifter of Skulls
36% of 112 decks +35% synergy
Drowner of Hope
34% of 160 decks +34% synergy
Eyeless Watcher
33% of 159 decks +33% synergy
Benthic Anomaly
32% of 75 decks +30% synergy
Ulamog's Nullifier
31% of 112 decks +31% synergy
Smothering Abomination
31% of 112 decks +30% synergy
Liberator, Urza's Battlethopter
31% of 127 decks +29% synergy
Brood Butcher
30% of 111 decks +30% synergy
Writhing Chrysalis
29% of 79 decks +27% synergy
Hope-Ender Coatl
28% of 29 decks +27% synergy
Nettle Drone
25% of 160 decks +25% synergy
Vile Redeemer
25% of 159 decks +24% synergy
Thief of Existence
24% of 79 decks +24% synergy
Morophon, the Boundless
24% of 110 decks +11% synergy
Ancestral Statue
22% of 160 decks +22% synergy
Spawn-Gang Commander
21% of 80 decks +20% synergy
Birds of Paradise
21% of 159 decks -6% synergy
Endless One
21% of 160 decks +20% synergy
Bearer of Silence
21% of 112 decks +20% synergy
Bismuth Mindrender
20% of 59 decks +19% synergy
Breaker of Creation
20% of 80 decks +19% synergy
Bane of Bala Ged
20% of 160 decks +19% synergy
Pathrazer of Ulamog
20% of 160 decks +19% synergy
Ruination Guide
19% of 160 decks +19% synergy
Instants
Kozilek's Command
64% of 75 decks +63% synergy
Eldritch Immunity
61% of 75 decks +60% synergy
Null Elemental Blast
50% of 80 decks +48% synergy
Titan's Presence
42% of 160 decks +41% synergy
Void Shatter
34% of 160 decks +33% synergy
Eldrazi Confluence
32% of 75 decks +31% synergy
Not of This World
26% of 160 decks +25% synergy
Spell Shrivel
24% of 160 decks +24% synergy
Vampiric Tutor
23% of 112 decks +5% synergy
Despark
23% of 110 decks +7% synergy
Desecrate Reality
23% of 111 decks +22% synergy
Cyclonic Rift
21% of 160 decks -7% synergy
Warping Wail
20% of 160 decks +19% synergy
Mana Drain
17% of 160 decks +2% synergy
Kozilek's Return
16% of 160 decks +16% synergy
Fierce Guardianship
16% of 150 decks -2% synergy
Worldly Tutor
15% of 159 decks +1% synergy
Counterspell
14% of 160 decks -29% synergy
Return of the Wildspeaker
14% of 149 decks +1% synergy
Heroic Intervention
14% of 159 decks -16% synergy
Abstruse Appropriation
12% of 59 decks +9% synergy
Deflecting Swat
11% of 150 decks -5% synergy
Crib Swap
11% of 110 decks +9% synergy
Swords to Plowshares
11% of 110 decks -52% synergy
Beast Within
9% of 159 decks -30% synergy
Enlightened Tutor
8% of 110 decks -10% synergy
Path to Exile
8% of 110 decks -38% synergy
Slip Out the Back
8% of 132 decks +5% synergy
Teferi's Protection
7% of 110 decks -13% synergy
Crop Rotation
7% of 159 decks -3% synergy
Unfathomable Truths
7% of 75 decks +6% synergy
Eladamri's Call
6% of 110 decks -5% synergy
Chaos Warp
6% of 160 decks -26% synergy
Sorceries
Rise of the Eldrazi
39% of 111 decks +38% synergy
Demonic Tutor
27% of 112 decks +5% synergy
Selective Obliteration
27% of 75 decks +26% synergy
Calamity of the Titans
25% of 111 decks +24% synergy
Wargate
23% of 110 decks +20% synergy
Farseek
22% of 159 decks -12% synergy
Painful Truths
19% of 112 decks +16% synergy
Nature's Lore
17% of 159 decks -15% synergy
Cultivate
16% of 159 decks -30% synergy
Sylvan Scrying
16% of 159 decks +13% synergy
Bring to Light
14% of 159 decks +13% synergy
Kodama's Reach
13% of 159 decks -18% synergy
Tempt with Discovery
13% of 159 decks +9% synergy
Rampant Growth
12% of 159 decks -23% synergy
Ancient Stirrings
11% of 159 decks +11% synergy
Three Visits
11% of 159 decks -14% synergy
Skittering Invasion
10% of 160 decks +10% synergy
Last March of the Ents
8% of 112 decks +3% synergy
Blasphemous Act
8% of 160 decks -26% synergy
Oblivion Strike
7% of 112 decks +7% synergy
Skyshroud Claim
6% of 159 decks -3% synergy
Finale of Devastation
5% of 159 decks -3% synergy
Utility Artifacts
Fist of Suns
54% of 110 decks +47% synergy
Mystic Forge
52% of 160 decks +50% synergy
Herald's Horn
36% of 160 decks +30% synergy
Darksteel Monolith
32% of 111 decks +30% synergy
Lightning Greaves
27% of 160 decks +2% synergy
The Great Henge
22% of 149 decks +12% synergy
Vanquisher's Banner
22% of 160 decks +18% synergy
Idol of False Gods
21% of 76 decks +20% synergy
Expedition Map
16% of 160 decks +13% synergy
Hedron Archive
16% of 160 decks +13% synergy
Sensei's Divining Top
14% of 160 decks +9% synergy
Eldrazi Monument
14% of 160 decks +13% synergy
Skullclamp
13% of 160 decks +1% synergy
The One Ring
13% of 119 decks +4% synergy
Swiftfoot Boots
12% of 160 decks -16% synergy
Ozolith, the Shattered Spire
11% of 118 decks +5% synergy
Vedalken Orrery
10% of 160 decks +9% synergy
Chimil, the Inner Sun
9% of 88 decks +7% synergy
Strionic Resonator
8% of 160 decks +4% synergy
Akroma's Memorial
7% of 160 decks +6% synergy
Lithoform Engine
6% of 148 decks +5% synergy
Maskwood Nexus
6% of 144 decks +3% synergy
Palantír of Orthanc
5% of 112 decks +4% synergy
Mithril Coat
5% of 112 decks -0% synergy
The Ozolith
5% of 150 decks +2% synergy
Moonsilver Key
5% of 136 decks +4% synergy
Enchantments
Path of Annihilation
49% of 76 decks +47% synergy
Awakening Zone
43% of 159 decks +41% synergy
Spreading Plague
37% of 112 decks +36% synergy
Smothering Tithe
35% of 110 decks +11% synergy
Kindred Discovery
33% of 160 decks +26% synergy
Up the Beanstalk
32% of 97 decks +27% synergy
Temur Ascendancy
31% of 159 decks +16% synergy
Rhystic Study
31% of 160 decks +3% synergy
Rhythm of the Wild
25% of 159 decks +2% synergy
Garruk's Uprising
25% of 149 decks +9% synergy
Mana Maze
24% of 160 decks +24% synergy
Molten Nursery
22% of 160 decks +22% synergy
Cryptolith Rite
21% of 159 decks +18% synergy
Eldrazi Conscription
16% of 160 decks +15% synergy
Descendants' Path
13% of 159 decks +11% synergy
Hardened Scales
13% of 159 decks +4% synergy
Sylvan Library
11% of 159 decks -1% synergy
Reflections of Littjara
10% of 144 decks +5% synergy
Shadow in the Warp
9% of 128 decks +5% synergy
Guardian Project
8% of 159 decks -1% synergy
Curse of Opulence
8% of 160 decks +4% synergy
Mystic Remora
7% of 160 decks -11% synergy
Monstrous Vortex
7% of 76 decks +4% synergy
Food Chain
6% of 159 decks +5% synergy
Mana Echoes
6% of 160 decks +5% synergy
Leyline of the Guildpact
6% of 65 decks -17% synergy
Hydra's Growth
5% of 149 decks +3% synergy
Planeswalkers
Ugin, the Spirit Dragon
41% of 160 decks +39% synergy
Ashiok, Dream Render
18% of 112 decks +14% synergy
Utility Lands
Shrine of the Forsaken Gods
69% of 160 decks +68% synergy
Sanctum of Ugin
67% of 160 decks +66% synergy
Ugin's Labyrinth
51% of 80 decks +50% synergy
Reliquary Tower
45% of 160 decks +15% synergy
Urza's Power Plant
40% of 160 decks +38% synergy
Urza's Mine
40% of 160 decks +38% synergy
Urza's Tower
40% of 160 decks +38% synergy
Tomb of the Spirit Dragon
35% of 160 decks +34% synergy
Ancient Tomb
34% of 160 decks +24% synergy
Fountainport
32% of 19 decks +28% synergy
Three Tree City
28% of 25 decks +18% synergy
Temple of the False God
26% of 160 decks +16% synergy
Urza's Saga
24% of 139 decks +17% synergy
Cascading Cataracts
24% of 160 decks +23% synergy
Yavimaya, Cradle of Growth
22% of 139 decks +12% synergy
Urza's Workshop
19% of 127 decks +18% synergy
Bojuka Bog
19% of 112 decks -12% synergy
Inventors' Fair
15% of 160 decks +11% synergy
Rogue's Passage
15% of 160 decks -4% synergy
Bonders' Enclave
15% of 150 decks +12% synergy
Thespian's Stage
14% of 160 decks +12% synergy
Boseiju, Who Endures
14% of 133 decks -6% synergy
Guildless Commons
12% of 147 decks +11% synergy
Spawning Bed
10% of 160 decks +10% synergy
Otawara, Soaring City
10% of 134 decks -7% synergy
Urborg, Tomb of Yawgmoth
9% of 160 decks -0% synergy
Emergence Zone
9% of 160 decks +6% synergy
Alchemist's Refuge
8% of 159 decks +1% synergy
Vesuva
8% of 160 decks +6% synergy
Ruins of Oran-Rief
7% of 160 decks +7% synergy
Scavenger Grounds
7% of 160 decks +3% synergy
Trenchpost
7% of 75 decks +6% synergy
Kessig Wolf Run
6% of 159 decks -10% synergy
Mosswort Bridge
6% of 159 decks -5% synergy
Homeward Path
6% of 160 decks +4% synergy
Command Beacon
6% of 160 decks +1% synergy
Mana Artifacts
Sol Ring
97% of 160 decks +12% synergy
Arcane Signet
69% of 150 decks -3% synergy
Chromatic Lantern
52% of 160 decks +42% synergy
Thran Dynamo
37% of 160 decks +32% synergy
Talisman of Curiosity
35% of 159 decks +23% synergy
Basalt Monolith
31% of 160 decks +29% synergy
Talisman of Impulse
30% of 159 decks +21% synergy
Fellwar Stone
24% of 160 decks +3% synergy
Chromatic Orrery
21% of 150 decks +19% synergy
Mana Vault
19% of 160 decks +13% synergy
Talisman of Resilience
19% of 111 decks +7% synergy
Mana Crypt
19% of 160 decks +10% synergy
Talisman of Creativity
17% of 160 decks -12% synergy
Timeless Lotus
17% of 90 decks +3% synergy
Thought Vessel
16% of 160 decks -1% synergy
Talisman of Dominance
15% of 112 decks -16% synergy
Everflowing Chalice
12% of 160 decks +7% synergy
Commander's Sphere
8% of 160 decks -7% synergy
Mind Stone
8% of 160 decks -10% synergy
Dreamstone Hedron
7% of 160 decks +6% synergy
Talisman of Indulgence
6% of 112 decks -20% synergy
Lands
Command Tower
91% of 160 decks +17% synergy
Exotic Orchard
49% of 160 decks +14% synergy
Yavimaya Coast
48% of 159 decks +22% synergy
Secluded Courtyard
47% of 134 decks +42% synergy
Corrupted Crossroads
46% of 160 decks +46% synergy
Unclaimed Territory
44% of 160 decks +39% synergy
Karplusan Forest
43% of 159 decks +26% synergy
Shivan Reef
43% of 160 decks +16% synergy
Llanowar Wastes
42% of 111 decks +17% synergy
Cavern of Souls
39% of 160 decks +32% synergy
Path of Ancestry
39% of 160 decks +18% synergy
Underground River
38% of 112 decks +19% synergy
Urza's Cave
36% of 80 decks +32% synergy
Breeding Pool
36% of 159 decks -5% synergy
Sulfurous Springs
34% of 112 decks +14% synergy
Brushland
34% of 110 decks +18% synergy
Ketria Triome
34% of 149 decks +1% synergy
Stomping Ground
33% of 159 decks -8% synergy
Adarkar Wastes
33% of 110 decks +15% synergy
The World Tree
32% of 96 decks -1% synergy
Reflecting Pool
31% of 160 decks +26% synergy
Steam Vents
30% of 160 decks -9% synergy
Battlefield Forge
28% of 110 decks +3% synergy
Misty Rainforest
28% of 160 decks +16% synergy
Mana Confluence
27% of 160 decks +20% synergy
City of Brass
26% of 160 decks +18% synergy
Wooded Foothills
26% of 160 decks +15% synergy
Caves of Koilos
25% of 110 decks -3% synergy
Scalding Tarn
23% of 160 decks +12% synergy
Frontier Bivouac
23% of 159 decks -5% synergy
Crumbling Necropolis
21% of 112 decks -10% synergy
Savage Lands
21% of 111 decks -3% synergy
Spire Garden
20% of 159 decks -4% synergy
Rejuvenating Springs
19% of 146 decks -10% synergy
Opulent Palace
19% of 111 decks -8% synergy
Zagoth Triome
19% of 101 decks -12% synergy
Bountiful Landscape
18% of 76 decks +3% synergy
Morphic Pool
18% of 112 decks -8% synergy
Planar Nexus
18% of 80 decks +16% synergy
Sandsteppe Citadel
17% of 110 decks -8% synergy
Sea of Clouds
17% of 110 decks -9% synergy
Luxury Suite
17% of 112 decks -9% synergy
Opal Palace
17% of 160 decks +14% synergy
Bountiful Promenade
16% of 110 decks -8% synergy
Mystic Monastery
16% of 110 decks -10% synergy
Watery Grave
16% of 112 decks -25% synergy
Nomad Outpost
15% of 110 decks -12% synergy
Jungle Shrine
15% of 110 decks -17% synergy
Hallowed Fountain
15% of 110 decks -25% synergy
Twisted Landscape
15% of 60 decks -5% synergy