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
Prismari, the Inspiration
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Sanar, Unfinished Genius
0.9%inclusion8 decks924 decks
Zaffai and the Tempests
0.8%inclusion4 decks473 decks
Rootha, Mastering the Moment
0.1%inclusion3 decks4.67K decks
Muddle, the Ever-Changing
0.1%inclusion2 decks3.44K decks
Top Commanders
Kalamax, the Stormsire
17%inclusion1.44K decks8.57K decks
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1.6%inclusion178 decks10.9K decks
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1.8%inclusion147 decks8.27K decks
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1.0%inclusion117 decks11.4K decks
Riku of Two Reflections
2.1%inclusion110 decks5.25K decks
Parnesse, the Subtle Brush
7.1%inclusion99 decks1.40K decks
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0.6%inclusion98 decks16K decks
Fire Lord Azula
0.3%inclusion89 decks32.2K decks
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0.2%inclusion76 decks34.7K decks
Melek, Izzet Paragon
3.2%inclusion52 decks1.63K decks
Mizzix of the Izmagnus
0.9%inclusion49 decks5.75K decks
Galazeth Prismari
1.0%inclusion45 decks4.54K decks
Shiko and Narset, Unified
0.5%inclusion43 decks8.72K decks
Stella Lee, Wild Card
0.3%inclusion39 decks13.3K decks
Rootha, Mercurial Artist
10%inclusion39 decks397 decks
Anhelo, the Painter
0.6%inclusion39 decks6.25K decks
Lutri, the Spellchaser
6.6%inclusion38 decks574 decks
Storm, Force of Nature
0.2%inclusion34 decks14.9K decks
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0.4%inclusion30 decks8.39K decks
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1.5%inclusion29 decks1.95K decks
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1.9%inclusion28 decks1.49K decks
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0.2%inclusion27 decks13.6K decks
Krark, the Thumbless // Sakashima of a Thousand Faces
0.4%inclusion25 decks5.66K decks
Ral, Monsoon Mage
0.4%inclusion25 decks6.10K decks
New Cards
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25%inclusion173 decks702 decks
Flashback
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10%inclusion74 decks718 decks
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Erode
8.1%inclusion3 decks37 decks
High Synergy Cards
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Wilderness Reclamation
66%inclusion1.15K decks1.74K decks
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Harrow
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Opt
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21%inclusion357 decks1.74K decks
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15%inclusion522 decks3.56K decks
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7.6%inclusion41 decks537 decks
Coalition Victory
6.6%inclusion4 decks61 decks
Creatures
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43%inclusion1.51K decks3.56K decks
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42%inclusion1.50K decks3.56K decks
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41%inclusion710 decks1.74K decks
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32%inclusion1.14K decks3.56K decks
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30%inclusion527 decks1.74K decks
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26%inclusion932 decks3.56K decks
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24%inclusion50 decks205 decks
Wavebreak Hippocamp
23%inclusion821 decks3.56K decks
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22%inclusion119 decks537 decks
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18%inclusion572 decks3.17K decks
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17%inclusion92 decks537 decks
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12%inclusion437 decks3.56K decks
Melek, Izzet Paragon
12%inclusion432 decks3.56K decks
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12%inclusion20 decks168 decks
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12%inclusion24 decks205 decks
Bloom Tender
11%inclusion198 decks1.74K decks
Birgi, God of Storytelling
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7.3%inclusion257 decks3.52K decks
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7.2%inclusion256 decks3.56K decks
Instants
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44%inclusion760 decks1.74K decks
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43%inclusion747 decks1.74K decks
Snap
41%inclusion1.46K decks3.56K decks
Big Score
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37%inclusion1.30K decks3.56K decks
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31%inclusion64 decks205 decks
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28%inclusion151 decks537 decks
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Dig Through Time
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Pongify
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Consider
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Swan Song
22%inclusion766 decks3.56K decks
Electrodominance
21%inclusion743 decks3.56K decks
Terminate
19%inclusion104 decks537 decks
Fact or Fiction
19%inclusion680 decks3.56K decks
Dovin's Veto
19%inclusion39 decks205 decks
Demand Answers
19%inclusion675 decks3.56K decks
Eureka Moment
19%inclusion325 decks1.74K decks
Natural Connection
18%inclusion317 decks1.74K decks
Withering Torment
18%inclusion93 decks514 decks
Reality Shift
18%inclusion643 decks3.56K decks
Joint Exploration
18%inclusion312 decks1.74K decks
Mana Drain
18%inclusion637 decks3.56K decks
Fork
18%inclusion635 decks3.56K decks
Rapid Hybridization
18%inclusion632 decks3.56K decks
Bedevil
18%inclusion94 decks537 decks
Noxious Revival
17%inclusion300 decks1.74K decks
Impulse
17%inclusion598 decks3.56K decks
Generous Gift
17%inclusion34 decks205 decks
Boros Charm
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17%inclusion89 decks537 decks
Roiling Regrowth
16%inclusion287 decks1.74K decks
Flare of Duplication
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Fury Storm
16%inclusion572 decks3.56K decks
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16%inclusion12 decks75 decks
Sorceries
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40%inclusion691 decks1.74K decks
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35%inclusion1.25K decks3.56K decks
Rampant Growth
35%inclusion602 decks1.74K decks
Three Visits
31%inclusion534 decks1.74K decks
Chandra's Ignition
31%inclusion1.09K decks3.56K decks
Cultivate
30%inclusion519 decks1.74K decks
Ponder
28%inclusion1.01K decks3.56K decks
Solve the Equation
26%inclusion940 decks3.56K decks
Preordain
26%inclusion913 decks3.56K decks
Mana Geyser
25%inclusion899 decks3.56K decks
Mizzix's Mastery
24%inclusion854 decks3.56K decks
Feed the Swarm
23%inclusion125 decks537 decks
Faithless Looting
19%inclusion675 decks3.56K decks
Toxic Deluge
19%inclusion100 decks537 decks
Expressive Iteration
18%inclusion633 decks3.56K decks
Kodama's Reach
17%inclusion293 decks1.74K decks
Exsanguinate
16%inclusion88 decks537 decks
Windfall
16%inclusion574 decks3.56K decks
Time Wipe
16%inclusion33 decks205 decks
Villainous Wealth
16%inclusion12 decks75 decks
Torment of Hailfire
15%inclusion82 decks537 decks
Grapeshot
15%inclusion534 decks3.56K decks
Bonus Round
14%inclusion490 decks3.56K decks
Sign in Blood
14%inclusion73 decks537 decks
Night's Whisper
14%inclusion73 decks537 decks
Vandalblast
13%inclusion465 decks3.56K decks
Gitaxian Probe
13%inclusion459 decks3.56K decks
Crackle with Power
12%inclusion431 decks3.56K decks
Past in Flames
12%inclusion429 decks3.56K decks
Conflux
11%inclusion7 decks61 decks
Serum Visions
11%inclusion400 decks3.56K decks
Dismantling Wave
11%inclusion22 decks205 decks
Emergent Ultimatum
11%inclusion8 decks75 decks
Chain of Smog
10%inclusion54 decks537 decks
Reanimate
10%inclusion54 decks537 decks
Death Begets Life
10%inclusion6 decks61 decks
Approach of the Second Sun
10%inclusion20 decks205 decks
Gamble
9.3%inclusion330 decks3.56K decks
Merchant Scroll
9.2%inclusion328 decks3.56K decks
Vanquish the Horde
8.8%inclusion18 decks205 decks
Treasure Cruise
8.4%inclusion300 decks3.56K decks
Tendrils of Agony
8.4%inclusion45 decks537 decks
Sevinne's Reclamation
8.3%inclusion17 decks205 decks
Riveteers Confluence
8.0%inclusion6 decks75 decks
Ruinous Ultimatum
7.8%inclusion5 decks64 decks
Twinflame
7.8%inclusion277 decks3.56K decks
Road // Ruin
7.6%inclusion132 decks1.74K decks
Brass's Bounty
7.5%inclusion267 decks3.56K decks
Farewell
7.3%inclusion15 decks205 decks
Rite of Replication
7.3%inclusion260 decks3.56K decks
Utility Artifacts
Primal Amulet
29%inclusion1.05K decks3.56K decks
Swiftfoot Boots
26%inclusion919 decks3.56K decks
Lightning Greaves
26%inclusion912 decks3.56K decks
Isochron Scepter
21%inclusion733 decks3.56K decks
Mindsplice Apparatus
6.2%inclusion221 decks3.56K decks
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5.8%inclusion207 decks3.56K decks
Aetherflux Reservoir
5.7%inclusion203 decks3.56K decks
The One Ring
5.3%inclusion187 decks3.56K decks
Sapphire Medallion
5.2%inclusion185 decks3.56K decks
Enchantments
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43%inclusion1.53K decks3.56K decks
Whirlwind of Thought
41%inclusion85 decks205 decks
Double Vision
30%inclusion1.05K decks3.56K decks
Rhystic Study
24%inclusion845 decks3.56K decks
Swarm Intelligence
22%inclusion798 decks3.56K decks
Jeskai Ascendancy
20%inclusion41 decks205 decks
Mystic Remora
18%inclusion648 decks3.56K decks
Aligned Heart
17%inclusion28 decks169 decks
Smothering Tithe
16%inclusion32 decks205 decks
Arcane Bombardment
15%inclusion544 decks3.56K decks
Ghostly Prison
13%inclusion27 decks205 decks
Leyline of the Guildpact
13%inclusion8 decks61 decks
Mirari's Wake
13%inclusion9 decks72 decks
Leyline Immersion
11%inclusion184 decks1.74K decks
Fiery Inscription
8.5%inclusion303 decks3.56K decks
Sylvan Library
8.4%inclusion147 decks1.74K decks
Curiosity
7.9%inclusion282 decks3.56K decks
Wild Growth
6.8%inclusion119 decks1.74K decks
Cryptolith Rite
6.8%inclusion118 decks1.74K decks
Propaganda
6.5%inclusion231 decks3.56K decks
Sorcerer Class
6.3%inclusion224 decks3.56K decks
Dual Casting
5.9%inclusion211 decks3.56K decks
Jace's Sanctum
5.9%inclusion211 decks3.56K decks
Tempest Technique
5.3%inclusion9 decks169 decks
Shark Typhoon
5.3%inclusion189 decks3.56K decks
Planeswalkers
Professor Onyx
36%inclusion193 decks537 decks
Ral, Crackling Wit
10%inclusion356 decks3.52K decks
Ashiok, Dream Render
8.4%inclusion45 decks537 decks
Chandra, Hope's Beacon
6.6%inclusion235 decks3.56K decks
Teferi, Time Raveler
5.4%inclusion11 decks205 decks
Utility Lands
Reliquary Tower
48%inclusion1.72K decks3.56K decks
Kessig Wolf Run
37%inclusion636 decks1.74K decks
Bojuka Bog
28%inclusion153 decks537 decks
Mystic Sanctuary
28%inclusion1K decks3.56K decks
Boseiju, Who Endures
20%inclusion349 decks1.74K decks
Otawara, Soaring City
15%inclusion551 decks3.56K decks
Rogue's Passage
15%inclusion519 decks3.56K decks
Mistrise Village
14%inclusion370 decks2.65K decks
Desolate Lighthouse
7.3%inclusion260 decks3.56K decks
Mosswort Bridge
7.3%inclusion127 decks1.74K decks
Ancient Tomb
7.1%inclusion254 decks3.56K decks
Scavenger Grounds
7.0%inclusion250 decks3.56K decks
Halimar Depths
5.9%inclusion210 decks3.56K decks
Alchemist's Refuge
5.7%inclusion100 decks1.74K decks
Lindblum, Industrial Regency
5.6%inclusion130 decks2.33K decks
Yavimaya, Cradle of Growth
5.4%inclusion191 decks3.56K decks
Temple of the False God
5.0%inclusion179 decks3.56K decks
Mana Artifacts
Sol Ring
85%inclusion3.02K decks3.56K decks
Arcane Signet
80%inclusion2.85K decks3.56K decks
Talisman of Dominance
48%inclusion260 decks537 decks
Talisman of Indulgence
46%inclusion249 decks537 decks
Dimir Signet
43%inclusion232 decks537 decks
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42%inclusion1.49K decks3.56K decks
Rakdos Signet
41%inclusion220 decks537 decks
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37%inclusion1.32K decks3.56K decks
Talisman of Progress
35%inclusion72 decks205 decks
Azorius Signet
34%inclusion69 decks205 decks
Springleaf Drum
31%inclusion1.10K decks3.56K decks
Boros Signet
29%inclusion59 decks205 decks
Relic of Legends
25%inclusion875 decks3.56K decks
Fellwar Stone
23%inclusion826 decks3.56K decks
Talisman of Conviction
23%inclusion47 decks205 decks
Thought Vessel
20%inclusion728 decks3.56K decks
Talisman of Curiosity
20%inclusion343 decks1.74K decks
Talisman of Impulse
12%inclusion205 decks1.74K decks
Mind Stone
11%inclusion405 decks3.56K decks
Relic of Sauron
11%inclusion60 decks537 decks
Simic Signet
11%inclusion185 decks1.74K decks
Pyromancer's Goggles
8.5%inclusion303 decks3.56K decks
Lotus Petal
8.1%inclusion289 decks3.56K decks
Bender's Waterskin
8.1%inclusion158 decks1.96K decks
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7.9%inclusion282 decks3.56K decks
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6.3%inclusion4 decks64 decks
Lands
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60%inclusion2.13K decks3.56K decks
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59%inclusion1.02K decks1.74K decks
Stomping Ground
59%inclusion1.02K decks1.74K decks
Frontier Bivouac
55%inclusion964 decks1.74K decks
Exotic Orchard
54%inclusion1.92K decks3.56K decks
Ketria Triome
54%inclusion933 decks1.74K decks
Shivan Reef
51%inclusion1.83K decks3.56K decks
Watery Grave
50%inclusion268 decks537 decks
Blood Crypt
49%inclusion261 decks537 decks
Yavimaya Coast
48%inclusion842 decks1.74K decks
Mystic Monastery
46%inclusion94 decks205 decks
Cinder Glade
45%inclusion778 decks1.74K decks
Training Center
45%inclusion1.59K decks3.56K decks
Dragonskull Summit
45%inclusion239 decks537 decks
Hinterland Harbor
44%inclusion772 decks1.74K decks
Rejuvenating Springs
43%inclusion754 decks1.74K decks
Xander's Lounge
41%inclusion222 decks537 decks
Drowned Catacomb
41%inclusion222 decks537 decks
Crumbling Necropolis
41%inclusion220 decks537 decks
Glacial Fortress
40%inclusion82 decks205 decks
Sacred Foundry
39%inclusion80 decks205 decks
Clifftop Retreat
38%inclusion78 decks205 decks
Hallowed Fountain
38%inclusion78 decks205 decks
Scalding Tarn
37%inclusion1.32K decks3.56K decks
Rootbound Crag
33%inclusion583 decks1.74K decks
Stormcarved Coast
33%inclusion1.18K decks3.56K decks
Raugrin Triome
32%inclusion65 decks205 decks
Spire Garden
31%inclusion546 decks1.74K decks
Luxury Suite
31%inclusion168 decks537 decks
Morphic Pool
31%inclusion167 decks537 decks
Sulfurous Springs
31%inclusion165 decks537 decks
Temple Garden
31%inclusion22 decks72 decks
Cascade Bluffs
30%inclusion1.08K decks3.56K decks
Underground River
30%inclusion162 decks537 decks
Zagoth Triome
29%inclusion22 decks75 decks
Battlefield Forge
29%inclusion60 decks205 decks
Prairie Stream
29%inclusion60 decks205 decks
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29%inclusion1.02K decks3.56K decks
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29%inclusion59 decks205 decks
Shipwreck Marsh
28%inclusion148 decks537 decks
Holdout Settlement
27%inclusion968 decks3.56K decks
Survivors' Encampment
27%inclusion966 decks3.56K decks
Overgrown Tomb
27%inclusion20 decks75 decks
Haunted Ridge
25%inclusion135 decks537 decks
Jetmir's Garden
25%inclusion18 decks72 decks
Dreamroot Cascade
24%inclusion425 decks1.74K decks
Misty Rainforest
24%inclusion852 decks3.56K decks
Wooded Foothills
24%inclusion841 decks3.56K decks