Expansion // Explosion
Twincast

   Prerequisites

What do I need to start this combo?
Expansion // Explosion and Twincast in hand.
You have a way to cast an additional instant or sorcery, or an opponent is casting one.
urur, plus enough mana to cast the additional spell if needed available

   Steps

How does this combo work?
1
Cast any other instant and/or sorcery spell, or wait for an opponent to cast one.
2
Holding priority, cast Expansion by paying urur, copying the next instant or sorcery spell you cast with mana value four or less.
3
Cast Twincast by paying , targeting the instant or sorcery spell cast in step 1.
4
The delayed trigger from Expansion triggers, copying Twincast, with the copy targeting the original Twincast.
5
Resolve the copy of Twincast, copying Twincast, with the copy targeting the original Twincast.
6
Repeat step 5.

   Results

What do I get from this combo?
Infinite magecraft triggers
Vivi Ornitier
0.18% of 14816 decks 27 decks
Top Commanders
Kalamax, the Stormsire
18.26% of 7481 decks 1366 decks
Veyran, Voice of Duality
1.81% of 9411 decks 170 decks
Riku of Two Reflections
2.13% of 4965 decks 106 decks
Kess, Dissident Mage
1.37% of 7429 decks 102 decks
Niv-Mizzet, Parun
0.61% of 15991 decks 98 decks
Parnesse, the Subtle Brush
7.67% of 1082 decks 83 decks
Alania, Divergent Storm
0.83% of 6879 decks 57 decks
Melek, Izzet Paragon
3.06% of 1601 decks 49 decks
Anhelo, the Painter
0.81% of 5958 decks 48 decks
Galazeth Prismari
1.13% of 3906 decks 44 decks
Mizzix of the Izmagnus
0.76% of 5159 decks 39 decks
Stella Lee, Wild Card
0.28% of 12908 decks 36 decks
Rootha, Mercurial Artist
9.88% of 344 decks 34 decks
Zaffai, Thunder Conductor
2.00% of 1399 decks 28 decks
Storm, Force of Nature
0.24% of 11127 decks 27 decks
Gandalf the Grey
1.24% of 1934 decks 24 decks
Kykar, Wind's Fury
0.20% of 11897 decks 24 decks
New Cards
Kuja, Genome Sorcerer
10% of 80 decks +8% synergy
Astelli Reclaimer
9% of 11 decks +9% synergy
Beyond the Quiet
9% of 11 decks +9% synergy
Station Monitor
9% of 11 decks +9% synergy
Vivi Ornitier
8% of 559 decks +4% synergy
High Synergy Cards
Reverberate
79% of 2937 decks +77% synergy
Wilderness Reclamation
68% of 1621 decks +64% synergy
Narset's Reversal
67% of 2937 decks +64% synergy
Storm-Kiln Artist
69% of 2937 decks +61% synergy
Archmage Emeritus
68% of 2937 decks +60% synergy
Harrow
69% of 1621 decks +60% synergy
Ral, Storm Conduit
60% of 2937 decks +57% synergy
Twinning Staff
56% of 2937 decks +55% synergy
Growth Spiral
76% of 1621 decks +54% synergy
Manamorphose
56% of 1621 decks +53% synergy
Top Cards
Frantic Search
61% of 2937 decks +47% synergy
Beast Within
59% of 1621 decks +23% synergy
Counterspell
55% of 2937 decks +13% synergy
Increasing Vengeance
54% of 2937 decks +53% synergy
Brainstorm
53% of 2937 decks +34% synergy
Farseek
52% of 1621 decks +17% synergy
Swords to Plowshares
52% of 150 decks -10% synergy
Chaos Warp
49% of 2937 decks +18% synergy
Opt
46% of 2937 decks +36% synergy
Dualcaster Mage
44% of 2937 decks +39% synergy
Game Changers
Crop Rotation
63% of 1621 decks +53% synergy
Cyclonic Rift
36% of 2937 decks +11% synergy
Mystical Tutor
36% of 2937 decks +23% synergy
Deflecting Swat
35% of 2937 decks +19% synergy
Jeska's Will
26% of 2937 decks +10% synergy
Fierce Guardianship
22% of 2937 decks +4% synergy
Demonic Tutor
22% of 369 decks +2% synergy
Seedborn Muse
22% of 1621 decks +14% synergy
Underworld Breach
14% of 2937 decks +8% synergy
Notion Thief
10% of 369 decks +4% synergy
Creatures
Rashmi, Eternities Crafter
43% of 1621 decks +41% synergy
Goblin Electromancer
43% of 2937 decks +34% synergy
Veyran, Voice of Duality
39% of 2937 decks +33% synergy
Guttersnipe
34% of 2937 decks +28% synergy
Nightscape Familiar
29% of 369 decks +26% synergy
Talrand, Sky Summoner
29% of 2937 decks +24% synergy
Birds of Paradise
28% of 1621 decks +1% synergy
Wavebreak Hippocamp
26% of 2937 decks +25% synergy
Sedgemoor Witch
26% of 369 decks +25% synergy
Stormcatch Mentor
25% of 1898 decks +19% synergy
Witherbloom Apprentice
22% of 64 decks +20% synergy
Flamehold Grappler
21% of 62 decks +19% synergy
Cormela, Glamour Thief
21% of 369 decks +19% synergy
Kess, Dissident Mage
20% of 369 decks +16% synergy
Monastery Mentor
19% of 150 decks +17% synergy
Young Pyromancer
19% of 2937 decks +15% synergy
Baral, Chief of Compliance
17% of 2937 decks +15% synergy
Niv-Mizzet, Parun
17% of 2937 decks +9% synergy
Archmage of Runes
17% of 1498 decks +14% synergy
Thunderclap Drake
17% of 2197 decks +15% synergy
Ojer Pakpatiq, Deepest Epoch
14% of 2715 decks +13% synergy
Melek, Izzet Paragon
14% of 2937 decks +13% synergy
Elsha, Threefold Master
13% of 63 decks +11% synergy
Harmonic Prodigy
12% of 2937 decks +8% synergy
Third Path Iconoclast
12% of 2937 decks +6% synergy
Pinnacle Monk
12% of 2019 decks +8% synergy
Kykar, Wind's Fury
12% of 150 decks +8% synergy
Soulfire Grand Master
11% of 150 decks +10% synergy
Elsha of the Infinite
11% of 150 decks +9% synergy
Goblin Anarchomancer
11% of 1621 decks -2% synergy
Murmuring Mystic
11% of 2937 decks +9% synergy
Bloom Tender
11% of 1621 decks +3% synergy
Wandering Archaic
10% of 2937 decks +9% synergy
Errant, Street Artist
10% of 2937 decks +10% synergy
Selvala, Explorer Returned
10% of 59 decks +7% synergy
Faeburrow Elder
10% of 59 decks -1% synergy
Coruscation Mage
10% of 1892 decks +6% synergy
Exalted Flamer of Tzeentch
10% of 2937 decks +7% synergy
Spellseeker
10% of 2937 decks +6% synergy
Birgi, God of Storytelling
10% of 2937 decks +4% synergy
Songcrafter Mage
10% of 446 decks +8% synergy
Lier, Disciple of the Drowned
9% of 2937 decks +8% synergy
Jadar, Ghoulcaller of Nephalia
9% of 369 decks +7% synergy
Deathrite Shaman
9% of 64 decks -2% synergy
Esper Sentinel
9% of 150 decks -10% synergy
Ashling, Flame Dancer
9% of 2030 decks +8% synergy
Narset, Jeskai Waymaster
9% of 69 decks +8% synergy
Electrostatic Field
9% of 2937 decks +6% synergy
Eternal Witness
8% of 1621 decks -10% synergy
Snapcaster Mage
8% of 2937 decks +6% synergy
Instants
Entish Restoration
42% of 1621 decks +36% synergy
Planar Genesis
41% of 1060 decks +36% synergy
Snap
40% of 2937 decks +33% synergy
Dark Ritual
40% of 369 decks +17% synergy
Thrill of Possibility
39% of 2937 decks +29% synergy
Big Score
39% of 2937 decks +30% synergy
Path to Exile
36% of 150 decks -11% synergy
Nature's Claim
34% of 1621 decks +27% synergy
Lightning Bolt
33% of 2937 decks +22% synergy
Dig Through Time
31% of 2937 decks +26% synergy
Comet Storm
30% of 2937 decks +28% synergy
Reiterate
29% of 2937 decks +28% synergy
Unexpected Windfall
29% of 2937 decks +22% synergy
Return the Favor
27% of 2206 decks +24% synergy
Artifact Mutation
27% of 1621 decks +23% synergy
Pongify
26% of 2937 decks +15% synergy
Rakdos Charm
26% of 369 decks +11% synergy
Negate
25% of 2937 decks +4% synergy
Galvanic Iteration
25% of 2937 decks +23% synergy
Assassin's Trophy
25% of 64 decks -5% synergy
Fact or Fiction
24% of 2937 decks +19% synergy
Soul's Fire
24% of 2937 decks +23% synergy
Joint Exploration
23% of 1621 decks +21% synergy
Withering Torment
23% of 229 decks +15% synergy
Dovin's Veto
23% of 150 decks +5% synergy
Auroral Procession
23% of 460 decks +20% synergy
Natural Connection
23% of 1621 decks +22% synergy
Return of the Wildspeaker
23% of 1621 decks +10% synergy
Arcane Denial
22% of 2937 decks +2% synergy
Bedevil
21% of 369 decks +8% synergy
Seething Song
20% of 2937 decks +14% synergy
Boros Charm
20% of 150 decks -4% synergy
Generous Gift
20% of 150 decks -4% synergy
Demand Answers
20% of 2586 decks +14% synergy
Impulse
20% of 2937 decks +18% synergy
Reality Shift
19% of 2937 decks +11% synergy
An Offer You Can't Refuse
19% of 2937 decks -4% synergy
Electrodominance
19% of 2937 decks +17% synergy
Fury Storm
19% of 2937 decks +18% synergy
Swan Song
19% of 2937 decks +2% synergy
Twinferno
19% of 2937 decks +17% synergy
Nexus of Fate
19% of 2937 decks +17% synergy
Terminate
18% of 369 decks -1% synergy
Anguished Unmaking
18% of 49 decks -6% synergy
Mana Drain
18% of 2937 decks +3% synergy
Consider
18% of 2937 decks +12% synergy
Noxious Revival
17% of 1621 decks +12% synergy
Rapid Hybridization
17% of 2937 decks +8% synergy
Despark
16% of 49 decks +2% synergy
Roiling Regrowth
16% of 1621 decks +13% synergy
Sorceries
Blasphemous Act
38% of 2937 decks +5% synergy
Nature's Lore
37% of 1621 decks +5% synergy
Rampant Growth
37% of 1621 decks +3% synergy
Chandra's Ignition
34% of 2937 decks +28% synergy
Cultivate
33% of 1621 decks -11% synergy
Feed the Swarm
30% of 369 decks +13% synergy
Three Visits
30% of 1621 decks +5% synergy
Solve the Equation
29% of 2937 decks +26% synergy
Ponder
27% of 2937 decks +15% synergy
Mizzix's Mastery
25% of 2937 decks +21% synergy
Preordain
24% of 2937 decks +15% synergy
Mana Geyser
24% of 2937 decks +18% synergy
Death Begets Life
22% of 23 decks +19% synergy
Villainous Wealth
20% of 64 decks +13% synergy
Toxic Deluge
18% of 369 decks +0% synergy
Torment of Hailfire
18% of 369 decks +14% synergy
Kodama's Reach
18% of 1621 decks -12% synergy
Conflux
17% of 46 decks +14% synergy
Exsanguinate
17% of 369 decks +11% synergy
Faithless Looting
17% of 2937 decks +0% synergy
Night's Whisper
16% of 369 decks +7% synergy
Windfall
15% of 2937 decks +3% synergy
Sign in Blood
15% of 369 decks +6% synergy
Expressive Iteration
15% of 2937 decks +8% synergy
Grapeshot
15% of 2937 decks +11% synergy
Ruinous Ultimatum
14% of 49 decks -5% synergy
Time Wipe
14% of 150 decks +8% synergy
Vandalblast
14% of 2937 decks -2% synergy
Chain of Smog
13% of 369 decks +12% synergy
Emergent Ultimatum
12% of 64 decks +10% synergy
Gitaxian Probe
12% of 2937 decks +7% synergy
Bonus Round
11% of 2937 decks +11% synergy
Past in Flames
11% of 2937 decks +9% synergy
Serum Visions
11% of 2937 decks +7% synergy
Cruel Ultimatum
11% of 369 decks +8% synergy
Approach of the Second Sun
11% of 150 decks +7% synergy
Farewell
11% of 150 decks -2% synergy
Reanimate
9% of 369 decks -8% synergy
Merchant Scroll
9% of 2937 decks +8% synergy
Road // Ruin
9% of 1621 decks +9% synergy
Gamble
9% of 2937 decks +0% synergy
Syphon Mind
9% of 369 decks +6% synergy
Twinflame
9% of 2937 decks +6% synergy
Crackle with Power
9% of 2937 decks +7% synergy
Sevinne's Reclamation
9% of 150 decks +1% synergy
Supreme Verdict
9% of 150 decks -4% synergy
Bala Ged Recovery
9% of 1621 decks +1% synergy
Wargate
8% of 59 decks +6% synergy
Blasphemous Edict
8% of 203 decks +2% synergy
Treasure Cruise
8% of 2937 decks +3% synergy
Utility Artifacts
Primal Amulet
35% of 2937 decks +34% synergy
Lightning Greaves
28% of 2937 decks +3% synergy
Swiftfoot Boots
26% of 2937 decks -1% synergy
Isochron Scepter
22% of 2937 decks +19% synergy
Mindsplice Apparatus
8% of 2937 decks +6% synergy
Smuggler's Copter
5% of 2937 decks +4% synergy
The One Ring
5% of 2937 decks -3% synergy
Sensei's Divining Top
5% of 2937 decks +0% synergy
Bolas's Citadel
5% of 369 decks -3% synergy
Enchantments
Thousand-Year Storm
42% of 2937 decks +37% synergy
Whirlwind of Thought
41% of 150 decks +32% synergy
Double Vision
33% of 2937 decks +32% synergy
Swarm Intelligence
27% of 2937 decks +26% synergy
Rhystic Study
26% of 2937 decks +0% synergy
Smothering Tithe
23% of 150 decks +0% synergy
Aligned Heart
19% of 63 decks +18% synergy
Mystic Remora
18% of 2937 decks +2% synergy
Leyline of the Guildpact
17% of 36 decks +1% synergy
Arcane Bombardment
16% of 2937 decks +15% synergy
Jeskai Ascendancy
16% of 150 decks +11% synergy
Mirari's Wake
14% of 59 decks +2% synergy
Fiery Inscription
13% of 2937 decks +9% synergy
Leyline Immersion
12% of 1621 decks +12% synergy
Ghostly Prison
12% of 150 decks +1% synergy
Sylvan Library
10% of 1621 decks -0% synergy
Tempest Technique
8% of 63 decks +7% synergy
Jace's Sanctum
8% of 2937 decks +7% synergy
Curiosity
7% of 2937 decks +3% synergy
Sorcerer Class
7% of 2937 decks +5% synergy
Cryptolith Rite
7% of 1621 decks +3% synergy
Propaganda
6% of 2937 decks -7% synergy
Rite of the Dragoncaller
6% of 1477 decks +5% synergy
Anointed Procession
6% of 150 decks -2% synergy
Wild Growth
6% of 1621 decks -5% synergy
Dual Casting
6% of 2937 decks +6% synergy
Shark Typhoon
6% of 2937 decks +3% synergy
Black Market Connections
5% of 369 decks -6% synergy
Planeswalkers
Professor Onyx
38% of 369 decks +37% synergy
Ashiok, Dream Render
11% of 369 decks +8% synergy
Ral, Crackling Wit
11% of 1902 decks +7% synergy
Chandra, Hope's Beacon
9% of 2937 decks +8% synergy
Teferi, Time Raveler
7% of 150 decks +1% synergy
Narset, Parter of Veils
5% of 2937 decks +1% synergy
Utility Lands
Reliquary Tower
50% of 2937 decks +20% synergy
Kessig Wolf Run
38% of 1621 decks +22% synergy
Mystic Sanctuary
29% of 2937 decks +18% synergy
Bojuka Bog
25% of 369 decks -5% synergy
Boseiju, Who Endures
19% of 1621 decks +0% synergy
Rogue's Passage
16% of 2937 decks -4% synergy
Otawara, Soaring City
14% of 2937 decks -3% synergy
Mistrise Village
13% of 889 decks +5% synergy
Scavenger Grounds
9% of 2937 decks +6% synergy
Ancient Tomb
8% of 2937 decks -1% synergy
Mosswort Bridge
8% of 1621 decks -2% synergy
Desolate Lighthouse
8% of 2937 decks +4% synergy
Halimar Depths
7% of 2937 decks +4% synergy
Lindblum, Industrial Regency
7% of 510 decks +3% synergy
Eiganjo, Seat of the Empire
7% of 150 decks -1% synergy
Yavimaya, Cradle of Growth
6% of 2937 decks -3% synergy
Temple of the False God
6% of 2937 decks -4% synergy
Alchemist's Refuge
5% of 1621 decks -1% synergy
Mana Artifacts
Sol Ring
87% of 2937 decks +2% synergy
Arcane Signet
82% of 2937 decks +9% synergy
Talisman of Dominance
49% of 369 decks +17% synergy
Dimir Signet
48% of 369 decks +21% synergy
Talisman of Indulgence
45% of 369 decks +18% synergy
Rakdos Signet
44% of 369 decks +16% synergy
Talisman of Creativity
41% of 2937 decks +13% synergy
Izzet Signet
38% of 2937 decks +12% synergy
Springleaf Drum
37% of 2937 decks +35% synergy
Azorius Signet
32% of 150 decks +8% synergy
Talisman of Progress
31% of 150 decks +6% synergy
Relic of Legends
28% of 2937 decks +26% synergy
Boros Signet
27% of 150 decks +6% synergy
Talisman of Conviction
22% of 150 decks -2% synergy
Talisman of Curiosity
22% of 1621 decks +9% synergy
Fellwar Stone
22% of 2937 decks +1% synergy
Thought Vessel
20% of 2937 decks +2% synergy
Simic Signet
13% of 1621 decks +1% synergy
Relic of Sauron
13% of 369 decks +5% synergy
Talisman of Impulse
13% of 1621 decks +3% synergy
Mind Stone
10% of 2937 decks -6% synergy
Commander's Sphere
10% of 2937 decks -4% synergy
Gruul Signet
10% of 1621 decks -1% synergy
Chromatic Lantern
9% of 2937 decks -0% synergy
Pyromancer's Goggles
9% of 2937 decks +7% synergy
Paradise Mantle
8% of 2937 decks +7% synergy
Lotus Petal
7% of 2937 decks -0% synergy
Chrome Mox
7% of 2937 decks +1% synergy
Cultivator's Caravan
6% of 2937 decks +6% synergy
Honor-Worn Shaku
5% of 2937 decks +5% synergy
Lands
Command Tower
92% of 2937 decks +17% synergy
Stomping Ground
59% of 1621 decks +19% synergy
Steam Vents
58% of 2937 decks +20% synergy
Sulfur Falls
57% of 2937 decks +24% synergy
Breeding Pool
57% of 1621 decks +16% synergy
Ketria Triome
55% of 1621 decks +24% synergy
Frontier Bivouac
55% of 1621 decks +26% synergy
Exotic Orchard
54% of 2937 decks +18% synergy
Yavimaya Coast
49% of 1621 decks +22% synergy
Shivan Reef
48% of 2937 decks +20% synergy
Cinder Glade
47% of 1621 decks +9% synergy
Training Center
47% of 2937 decks +20% synergy
Mystic Monastery
45% of 150 decks +17% synergy
Watery Grave
45% of 369 decks +5% synergy
Rejuvenating Springs
45% of 1621 decks +17% synergy
Crumbling Necropolis
44% of 369 decks +14% synergy
Dragonskull Summit
43% of 369 decks +9% synergy
Blood Crypt
42% of 369 decks +5% synergy
Xander's Lounge
41% of 369 decks +16% synergy
Drowned Catacomb
41% of 369 decks +13% synergy
Hallowed Fountain
40% of 150 decks +0% synergy
Hinterland Harbor
40% of 1621 decks +9% synergy
Glacial Fortress
37% of 150 decks +7% synergy
Raugrin Triome
37% of 150 decks +12% synergy
Sacred Foundry
37% of 150 decks +2% synergy
Scalding Tarn
36% of 2937 decks +25% synergy
Clifftop Retreat
36% of 150 decks +3% synergy
Morphic Pool
35% of 369 decks +9% synergy
Luxury Suite
33% of 369 decks +8% synergy
Spire Garden
32% of 1621 decks +9% synergy
Izzet Boilerworks
32% of 2937 decks +17% synergy
Underground River
32% of 369 decks +10% synergy
Zagoth Triome
31% of 64 decks +2% synergy
Rootbound Crag
31% of 1621 decks +5% synergy
Holdout Settlement
31% of 2937 decks +30% synergy
Survivors' Encampment
31% of 2937 decks +30% synergy
Overgrown Tomb
30% of 64 decks -11% synergy
Stormcarved Coast
29% of 2937 decks +10% synergy
Sulfurous Springs
29% of 369 decks +7% synergy
Ziatora's Proving Ground
28% of 64 decks -1% synergy
Cascade Bluffs
28% of 2937 decks +14% synergy
Spara's Headquarters
27% of 59 decks -2% synergy
Jetmir's Garden
27% of 59 decks -3% synergy
Temple Garden
27% of 59 decks -12% synergy
Sea of Clouds
27% of 150 decks +1% synergy
Shipwreck Marsh
27% of 369 decks +8% synergy
Battlefield Forge
25% of 150 decks -2% synergy
Simic Growth Chamber
25% of 1621 decks +6% synergy
Spectator Seating
25% of 150 decks +0% synergy
Misty Rainforest
24% of 2937 decks +13% synergy