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
Kalamax, the Stormsire
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Veyran, Voice of Duality
1.6%inclusion174 decks10.6K decks
Kess, Dissident Mage
1.7%inclusion142 decks8.16K decks
Riku of Two Reflections
2.2%inclusion112 decks5.16K decks
Alania, Divergent Storm
1.0%inclusion110 decks10.7K decks
Niv-Mizzet, Parun
0.6%inclusion98 decks16K decks
Parnesse, the Subtle Brush
7.2%inclusion98 decks1.37K decks
Fire Lord Azula
0.3%inclusion82 decks29.5K decks
Vivi Ornitier
0.2%inclusion65 decks32K decks
Melek, Izzet Paragon
3.3%inclusion53 decks1.62K decks
Mizzix of the Izmagnus
0.9%inclusion51 decks5.62K decks
Galazeth Prismari
1.0%inclusion45 decks4.42K decks
Shiko and Narset, Unified
0.6%inclusion45 decks8.16K decks
Stella Lee, Wild Card
0.3%inclusion41 decks14K decks
Anhelo, the Painter
0.6%inclusion39 decks6.23K decks
Rootha, Mercurial Artist
10%inclusion37 decks380 decks
Lutri, the Spellchaser
6.7%inclusion36 decks539 decks
Storm, Force of Nature
0.2%inclusion32 decks14.3K decks
New Cards
Resonating Lute
20%inclusion88 decks433 decks
Erode
13%inclusion3 decks24 decks
Silverquill, the Disputant
11%inclusion1 decks9 decks
Witherbloom, the Balancer
10%inclusion1 decks10 decks
Prismari, the Inspiration
10%inclusion44 decks450 decks
High Synergy Cards
Reverberate
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Narset's Reversal
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Wilderness Reclamation
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Archmage Emeritus
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Harrow
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Growth Spiral
74%inclusion1.27K decks1.72K decks
Manamorphose
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52%inclusion1.81K decks3.46K decks
Top Cards
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Beast Within
58%inclusion987 decks1.72K decks
Counterspell
54%inclusion1.88K decks3.46K decks
Brainstorm
52%inclusion1.80K decks3.46K decks
Swords to Plowshares
52%inclusion101 decks196 decks
Twinning Staff
51%inclusion1.75K decks3.46K decks
Farseek
49%inclusion838 decks1.72K decks
Dark Ritual
47%inclusion241 decks512 decks
Opt
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Chaos Warp
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Coalition Victory
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Creatures
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42%inclusion1.46K decks3.46K decks
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41%inclusion705 decks1.72K decks
Guttersnipe
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30%inclusion520 decks1.72K decks
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27%inclusion890 decks3.31K decks
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27%inclusion922 decks3.46K decks
Nightscape Familiar
27%inclusion136 decks512 decks
Monastery Mentor
26%inclusion51 decks196 decks
Wavebreak Hippocamp
24%inclusion816 decks3.46K decks
Sedgemoor Witch
23%inclusion117 decks512 decks
Young Pyromancer
19%inclusion656 decks3.46K decks
Archmage of Runes
18%inclusion536 decks2.96K decks
Cormela, Glamour Thief
18%inclusion91 decks512 decks
Witherbloom Apprentice
16%inclusion11 decks67 decks
Niv-Mizzet, Parun
16%inclusion563 decks3.46K decks
Kess, Dissident Mage
16%inclusion80 decks512 decks
Baral, Chief of Compliance
16%inclusion536 decks3.46K decks
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15%inclusion516 decks3.46K decks
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13%inclusion21 decks156 decks
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13%inclusion459 decks3.46K decks
Melek, Izzet Paragon
12%inclusion427 decks3.46K decks
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12%inclusion19 decks155 decks
Pinnacle Monk
12%inclusion413 decks3.41K decks
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12%inclusion23 decks196 decks
Bloom Tender
11%inclusion195 decks1.72K decks
Birgi, God of Storytelling
11%inclusion380 decks3.46K decks
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9.4%inclusion202 decks2.15K decks
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9.2%inclusion18 decks196 decks
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9.0%inclusion310 decks3.46K decks
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8.7%inclusion17 decks196 decks
Eternal Witness
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34%inclusion1.18K decks3.46K decks
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32%inclusion62 decks196 decks
Unexpected Windfall
30%inclusion1.02K decks3.46K decks
Comet Storm
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Dig Through Time
28%inclusion985 decks3.46K decks
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28%inclusion145 decks512 decks
Reiterate
28%inclusion970 decks3.46K decks
Return the Favor
28%inclusion961 decks3.46K decks
Pongify
26%inclusion908 decks3.46K decks
Artifact Mutation
26%inclusion442 decks1.72K decks
Negate
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25%inclusion871 decks3.46K decks
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24%inclusion413 decks1.72K decks
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22%inclusion762 decks3.46K decks
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22%inclusion750 decks3.46K decks
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21%inclusion718 decks3.46K decks
Electrodominance
21%inclusion709 decks3.46K decks
Dovin's Veto
20%inclusion40 decks196 decks
Demand Answers
20%inclusion681 decks3.46K decks
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Terminate
19%inclusion99 decks512 decks
Withering Torment
19%inclusion92 decks484 decks
Natural Connection
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Joint Exploration
18%inclusion317 decks1.72K decks
Eureka Moment
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Reality Shift
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18%inclusion12 decks67 decks
Mana Drain
18%inclusion616 decks3.46K decks
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Fork
18%inclusion612 decks3.46K decks
Boros Charm
17%inclusion34 decks196 decks
Impulse
17%inclusion598 decks3.46K decks
Rapid Hybridization
17%inclusion595 decks3.46K decks
Noxious Revival
17%inclusion291 decks1.72K decks
Generous Gift
17%inclusion33 decks196 decks
Waterlogged Teachings
17%inclusion86 decks512 decks
Roiling Regrowth
16%inclusion282 decks1.72K decks
Fury Storm
16%inclusion568 decks3.46K decks
Twinferno
16%inclusion554 decks3.46K decks
Sorceries
Nature's Lore
39%inclusion664 decks1.72K decks
Blasphemous Act
36%inclusion1.23K decks3.46K decks
Rampant Growth
34%inclusion585 decks1.72K decks
Chandra's Ignition
31%inclusion1.07K decks3.46K decks
Cultivate
30%inclusion516 decks1.72K decks
Three Visits
30%inclusion511 decks1.72K decks
Ponder
28%inclusion964 decks3.46K decks
Solve the Equation
27%inclusion923 decks3.46K decks
Preordain
26%inclusion882 decks3.46K decks
Mana Geyser
25%inclusion860 decks3.46K decks
Feed the Swarm
24%inclusion124 decks512 decks
Mizzix's Mastery
24%inclusion831 decks3.46K decks
Toxic Deluge
19%inclusion97 decks512 decks
Faithless Looting
19%inclusion648 decks3.46K decks
Expressive Iteration
17%inclusion601 decks3.46K decks
Time Wipe
17%inclusion34 decks196 decks
Kodama's Reach
17%inclusion291 decks1.72K decks
Exsanguinate
17%inclusion85 decks512 decks
Villainous Wealth
16%inclusion11 decks67 decks
Windfall
16%inclusion549 decks3.46K decks
Grapeshot
15%inclusion514 decks3.46K decks
Torment of Hailfire
15%inclusion76 decks512 decks
Sign in Blood
14%inclusion73 decks512 decks
Night's Whisper
14%inclusion72 decks512 decks
Bonus Round
14%inclusion476 decks3.46K decks
Vandalblast
13%inclusion458 decks3.46K decks
Gitaxian Probe
13%inclusion438 decks3.46K decks
Emergent Ultimatum
12%inclusion8 decks67 decks
Past in Flames
12%inclusion404 decks3.46K decks
Death Begets Life
12%inclusion6 decks52 decks
Crackle with Power
12%inclusion398 decks3.46K decks
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11%inclusion386 decks3.46K decks
Conflux
11%inclusion6 decks54 decks
Dismantling Wave
11%inclusion21 decks196 decks
Chain of Smog
10%inclusion53 decks512 decks
Reanimate
10%inclusion52 decks512 decks
Approach of the Second Sun
10%inclusion19 decks196 decks
Merchant Scroll
9.4%inclusion325 decks3.46K decks
Gamble
9.4%inclusion325 decks3.46K decks
Vanquish the Horde
9.2%inclusion18 decks196 decks
Riveteers Confluence
9.0%inclusion6 decks67 decks
Ruinous Ultimatum
8.8%inclusion5 decks57 decks
Sevinne's Reclamation
8.7%inclusion17 decks196 decks
Tendrils of Agony
8.4%inclusion43 decks512 decks
Treasure Cruise
8.3%inclusion288 decks3.46K decks
Wargate
7.9%inclusion5 decks63 decks
Road // Ruin
7.9%inclusion136 decks1.72K decks
Twinflame
7.9%inclusion274 decks3.46K decks
Rite of Replication
7.6%inclusion264 decks3.46K decks
Brass's Bounty
7.5%inclusion261 decks3.46K decks
Utility Artifacts
Primal Amulet
30%inclusion1.05K decks3.46K decks
Swiftfoot Boots
26%inclusion908 decks3.46K decks
Lightning Greaves
26%inclusion905 decks3.46K decks
Isochron Scepter
21%inclusion717 decks3.46K decks
Mindsplice Apparatus
6.6%inclusion228 decks3.46K decks
Aetherflux Reservoir
5.7%inclusion197 decks3.46K decks
Ruby Medallion
5.6%inclusion192 decks3.46K decks
The One Ring
5.3%inclusion183 decks3.46K decks
Sapphire Medallion
5.0%inclusion173 decks3.46K decks
Enchantments
Whirlwind of Thought
44%inclusion86 decks196 decks
Thousand-Year Storm
43%inclusion1.48K decks3.46K decks
Double Vision
30%inclusion1.05K decks3.46K decks
Rhystic Study
24%inclusion832 decks3.46K decks
Swarm Intelligence
23%inclusion791 decks3.46K decks
Jeskai Ascendancy
21%inclusion41 decks196 decks
Mystic Remora
18%inclusion629 decks3.46K decks
Aligned Heart
18%inclusion28 decks156 decks
Smothering Tithe
16%inclusion32 decks196 decks
Arcane Bombardment
16%inclusion540 decks3.46K decks
Ghostly Prison
15%inclusion30 decks196 decks
Leyline of the Guildpact
15%inclusion8 decks54 decks
Mirari's Wake
13%inclusion8 decks63 decks
Leyline Immersion
11%inclusion188 decks1.72K decks
Sylvan Library
8.7%inclusion150 decks1.72K decks
Fiery Inscription
8.6%inclusion299 decks3.46K decks
Curiosity
7.8%inclusion269 decks3.46K decks
Wild Growth
6.8%inclusion116 decks1.72K decks
Cryptolith Rite
6.6%inclusion114 decks1.72K decks
Propaganda
6.6%inclusion228 decks3.46K decks
Jace's Sanctum
6.4%inclusion221 decks3.46K decks
Sorcerer Class
6.2%inclusion216 decks3.46K decks
Dual Casting
5.8%inclusion200 decks3.46K decks
Tempest Technique
5.8%inclusion9 decks156 decks
Shark Typhoon
5.2%inclusion181 decks3.46K decks
Leyline of Anticipation
5.1%inclusion175 decks3.46K decks
Planeswalkers
Professor Onyx
37%inclusion191 decks512 decks
Ral, Crackling Wit
10%inclusion342 decks3.32K decks
Ashiok, Dream Render
8.8%inclusion45 decks512 decks
Chandra, Hope's Beacon
6.9%inclusion238 decks3.46K decks
Teferi, Time Raveler
5.1%inclusion10 decks196 decks
Narset, Parter of Veils
5.0%inclusion173 decks3.46K decks
Utility Lands
Reliquary Tower
49%inclusion1.68K decks3.46K decks
Kessig Wolf Run
37%inclusion634 decks1.72K decks
Mystic Sanctuary
29%inclusion990 decks3.46K decks
Bojuka Bog
28%inclusion142 decks512 decks
Boseiju, Who Endures
20%inclusion342 decks1.72K decks
Otawara, Soaring City
16%inclusion536 decks3.46K decks
Rogue's Passage
15%inclusion515 decks3.46K decks
Mistrise Village
14%inclusion338 decks2.43K decks
Desolate Lighthouse
7.6%inclusion262 decks3.46K decks
Ancient Tomb
7.3%inclusion254 decks3.46K decks
Scavenger Grounds
7.3%inclusion253 decks3.46K decks
Mosswort Bridge
7.2%inclusion124 decks1.72K decks
Halimar Depths
6.0%inclusion209 decks3.46K decks
Alchemist's Refuge
5.6%inclusion96 decks1.72K decks
Yavimaya, Cradle of Growth
5.5%inclusion191 decks3.46K decks
Lindblum, Industrial Regency
5.5%inclusion116 decks2.11K decks
Temple of the False God
5.1%inclusion178 decks3.46K decks
Mana Artifacts
Sol Ring
85%inclusion2.95K decks3.46K decks
Arcane Signet
80%inclusion2.78K decks3.46K decks
Talisman of Dominance
49%inclusion251 decks512 decks
Talisman of Indulgence
47%inclusion239 decks512 decks
Dimir Signet
44%inclusion225 decks512 decks
Rakdos Signet
41%inclusion212 decks512 decks
Talisman of Creativity
41%inclusion1.43K decks3.46K decks
Izzet Signet
37%inclusion1.29K decks3.46K decks
Talisman of Progress
36%inclusion70 decks196 decks
Azorius Signet
35%inclusion69 decks196 decks
Springleaf Drum
31%inclusion1.09K decks3.46K decks
Boros Signet
30%inclusion59 decks196 decks
Relic of Legends
25%inclusion863 decks3.46K decks
Fellwar Stone
23%inclusion799 decks3.46K decks
Talisman of Conviction
22%inclusion43 decks196 decks
Thought Vessel
20%inclusion708 decks3.46K decks
Talisman of Curiosity
19%inclusion334 decks1.72K decks
Relic of Sauron
12%inclusion59 decks512 decks
Talisman of Impulse
11%inclusion196 decks1.72K decks
Mind Stone
11%inclusion394 decks3.46K decks
Simic Signet
11%inclusion184 decks1.72K decks
Pyromancer's Goggles
8.6%inclusion297 decks3.46K decks
Bender's Waterskin
8.4%inclusion145 decks1.73K decks
Lotus Petal
8.3%inclusion286 decks3.46K decks
Commander's Sphere
8.1%inclusion281 decks3.46K decks
Chromatic Lantern
7.8%inclusion271 decks3.46K decks
Gruul Signet
7.3%inclusion125 decks1.72K decks
Chrome Mox
6.7%inclusion232 decks3.46K decks
Paradise Mantle
6.7%inclusion230 decks3.46K decks
Tablet of Discovery
5.6%inclusion21 decks372 decks
Orzhov Signet
5.3%inclusion3 decks57 decks
Lands
Command Tower
92%inclusion3.17K decks3.46K decks
Sulfur Falls
60%inclusion2.08K decks3.46K decks
Steam Vents
59%inclusion2.04K decks3.46K decks
Stomping Ground
59%inclusion1K decks1.72K decks
Breeding Pool
58%inclusion996 decks1.72K decks
Frontier Bivouac
56%inclusion954 decks1.72K decks
Exotic Orchard
54%inclusion1.87K decks3.46K decks
Ketria Triome
54%inclusion920 decks1.72K decks
Shivan Reef
51%inclusion1.77K decks3.46K decks
Watery Grave
50%inclusion255 decks512 decks
Mystic Monastery
49%inclusion96 decks196 decks
Yavimaya Coast
48%inclusion830 decks1.72K decks
Blood Crypt
48%inclusion247 decks512 decks
Cinder Glade
46%inclusion782 decks1.72K decks
Dragonskull Summit
46%inclusion233 decks512 decks
Training Center
44%inclusion1.54K decks3.46K decks
Hinterland Harbor
44%inclusion753 decks1.72K decks
Rejuvenating Springs
43%inclusion734 decks1.72K decks
Glacial Fortress
42%inclusion83 decks196 decks
Crumbling Necropolis
42%inclusion214 decks512 decks
Drowned Catacomb
42%inclusion214 decks512 decks
Xander's Lounge
42%inclusion213 decks512 decks
Clifftop Retreat
40%inclusion79 decks196 decks
Sacred Foundry
39%inclusion76 decks196 decks
Hallowed Fountain
38%inclusion74 decks196 decks
Scalding Tarn
37%inclusion1.27K decks3.46K decks
Rootbound Crag
33%inclusion574 decks1.72K decks
Luxury Suite
32%inclusion166 decks512 decks
Stormcarved Coast
32%inclusion1.11K decks3.46K decks
Morphic Pool
32%inclusion164 decks512 decks
Sulfurous Springs
32%inclusion162 decks512 decks
Raugrin Triome
32%inclusion62 decks196 decks
Prairie Stream
32%inclusion62 decks196 decks
Zagoth Triome
31%inclusion21 decks67 decks
Underground River
31%inclusion158 decks512 decks
Adarkar Wastes
31%inclusion60 decks196 decks
Battlefield Forge
31%inclusion60 decks196 decks
Spire Garden
30%inclusion523 decks1.72K decks
Cascade Bluffs
30%inclusion1.04K decks3.46K decks
Izzet Boilerworks
29%inclusion999 decks3.46K decks
Temple Garden
29%inclusion18 decks63 decks
Holdout Settlement
28%inclusion961 decks3.46K decks
Survivors' Encampment
28%inclusion952 decks3.46K decks
Jetmir's Garden
27%inclusion17 decks63 decks
Shipwreck Marsh
27%inclusion136 decks512 decks
Overgrown Tomb
25%inclusion17 decks67 decks
Haunted Ridge
25%inclusion127 decks512 decks
Savai Triome
25%inclusion14 decks57 decks
Rugged Prairie
24%inclusion48 decks196 decks
Dreamroot Cascade
24%inclusion413 decks1.72K decks