Big Instants

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This is basically a Vial Smasher deck built around large CMC instants.
Reduce cost of instants
Copy instants
Whenever you cast an instant... triggers
 
Mana Acceleration (12): General (2): Instants/Sorceries (35): Sideboard (Omitted/Cut card ideas):
1 Cloud Key 1 Ishai, Ojutai Dragonspeaker 1 Scour from Existence 1 Stone Calendar
1 Mana Matrix 1 Vial Smasher the Fierce 1 Breath of Malfegor 1 Izzet Chemister
1 Primal Amulet // Primal Wellspring   1 Epic Experiment 1 Torrential Gearhulk
1 Gilded Lotus Non-Instants/Sorceries (15): 1 Merciless Eviction 1 Guttersnipe
1 Goblin Electromancer 1 Sphinx-Bone Wand 1 Silumgar's Command 1 Past in Flames
1 Mizzix of the Izmagnus 1 Kess, Dissident Mage 1 Utter End 1 Empty the Pits
1 Arcane Melee 1 Melek, Izzet Paragon 1 Curtains' Call 1 Commune with Lava
1 As Foretold 1 Taigam, Ojutai Master 1 Army of the Damned 1 Fault Line
1 Baral, Chief of Compliance 1 Cast Through Time 1 Fated Return 1 Starstorm
1 Curious Homunculus // Voracious Reader 1 Docent of Perfection // Final Iteration 1 In Garruk's Wake 1 Mindswipe
1 Jace's Sanctum 1 Lunar Mystic 1 Plague Wind 1 Aurelia's Fury
1 Omnispell Adept 1 Metallurgic Summonings 1 AEthersnatch 1 Debt to the Deathless
  1 Swarm Intelligence 1 AEtherspouts 1 Sphinx's Revelation
Lands (36): 1 Talrand, Sky Summoner 1 Commandeer 1 Diabolic Revelation
1 Underground Sea 1 Trail of Evidence 1 Dig Through Time 1 Exsanguinate
1 Badlands 1 Charmbreaker Devils 1 Dragonlord's Prerogative 1 Blue Sun's Zenith
1 Tundra 1 Sunbird's Invocation 1 Gather Specimens 1 Pull from Tomorrow
1 Scrubland 1 Young Pyromancer 1 Mystic Confluence 1 Spell Burst
1 Volcanic Island 1 Soulfire Grand Master 1 Opportunity 1 Spell Swindle
1 Plateau   1 Rise from the Tides 1 Stroke of Genius
1 Watery Grave   1 River's Rebuke 1 Comet Storm
1 Blood Crypt   1 Spelljack 1 Release the Gremlins
1 Hallowed Fountain   1 Supplant Form 1 Volcanic Geyser
1 Godless Shrine   1 Time Stop 1 Beacon of Immortality
1 Steam Vents   1 Insurrection 1 Chant of Vitu-Ghazi
1 Sacred Foundry   1 Mizzix's Mastery 1 Decree of Justice
1 Sunken Ruins   1 Searing Wind 1 Entreat the Angels
1 Graven Cairns   1 Urza's Rage 1 Martial Coup
1 Mystic Gate   1 Volcanic Vision  
1 Fetid Heath   1 Word of Seizing  
1 Cascade Bluffs   1 Fated Retribution  
1 Rugged Prairie   1 Gideon's Phalanx  
1 Crumbling Necropolis   1 Return to Dust  
1 Arcane Sanctum   1 Secure the Wastes  
1 Nomad Outpost   1 White Sun's Zenith  
1 Mystic Monastery      
1 Command Tower      
1 Exotic Orchard      
1 Path of Ancestry      
1 Reflecting Pool      
1 Spinerock Knoll      
1 Windbrisk Heights      
1 Swamp      
4 Island      
1 Mountain      
1 Plains      
1 Sol Ring