Toshiro Instants

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Mono-black instants.
Lots of "destroy creature" instants.
 
Mana Acceleration (8): General (1): Instants (47): Sideboard (Omitted/Cut card ideas):
1 Caged Sun 1 Toshiro Umezawa 1 Scour from Existence 1 Doom Blade
1 Cloud Key   1 Annihilate 1 Go for the Throat
1 Jet Medallion Non-Instants (9): 1 Bake into a Pie 1 Blood Curdle
1 Mana Matrix 1 Dynavolt Tower 1 Broken Visage 1 Vile Rebirth
1 Primal Amulet // Primal Wellspring 1 Karn, Silver Golem 1 Curtains' Call 1 Shriveling Rot
1 Victory Chimes 1 Mirari 1 Darkness 1 Hatred
1 Crypt Ghast 1 Runechanter's Pike 1 Deadly Alliance 1 Nemesis Trap
1 Nirkana Revenant 1 Scroll of the Masters 1 Defile 1 Eat to Extinction
  1 Sentinel Tower 1 Drag to the Underworld 1 False Cure
Lands (35): 1 Sphinx-Bone Wand 1 Empty the Pits 1 Imp's Mischief
1 Arcane Lighthouse 1 Faerie Tauntings 1 Erebos's Intervention 1 Suffer the Past
1 Blackbloom Rogue // Blackbloom Bog 1 Null Profusion 1 Eyeblight's Ending 1 Withering Boon
1 Cabal Coffers   1 Fated Return 1 Shade's Breath
1 Cabal Stronghold   1 Feast or Famine 1 Insidious Dreams
1 Detection Tower   1 Finishing Blow 1 Vampiric Tutor
1 Guildless Commons   1 Force of Despair 1 Word of Command
1 Hagra Mauling // Hagra Broodpit   1 Grim Return 1 Warping Wail
1 Malakir Rebirth // Malakir Mire   1 Hero's Downfall 1 Fungal Infection
1 Myriad Landscape   1 Hideous End 1 Abnormal Endurance
1 Thawing Glaciers   1 Horobi's Whisper 1 Ad Nauseam
1 War Room   1 Howl from Beyond 1 Betrayal of Flesh
1 Zof Consumption // Zof Bloodbog   1 Liliana's Triumph 1 Burden of Greed
22 Swamp   1 Malicious Affliction 1 Consume the Meek
1 Sol Ring   1 Murder 1 Dark Bargain
    1 Murderous Spoils 1 Bile Blight
    1 Necrologia 1 Assassin's Blade
    1 Oblivion's Hunger 1 Cast Down
    1 Pharika's Libation 1 Cradle to Grave
    1 Poison the Cup 1 Chill to the Bone
    1 Price of Fame 1 Dark Banishing
    1 Reckless Spite 1 Death Rattle
    1 Rend Flesh 1 Murderous Cut
    1 Renegade's Getaway 1 Diabolic Edict
    1 Rise of the Dread Marn 1 Geth's Verdict
    1 Skeletal Scrying 1 Tribute to Hunger
    1 Soul Shatter 1 Vona's Hunger
    1 Spoils of Blood 1 Perilous Predicament
    1 Stunning Reversal 1 To the Slaughter
    1 Sudden Spoiling 1 Dismember
    1 Szat's Will 1 Tragic Slip
    1 Thrilling Encore 1 Public Execution
    1 Treacherous Urge 1 Expunge
    1 Tsabo's Decree 1 Terror
    1 Unlikely Aid  
    1 Victim of Night  
    1 Violet Pall  
    1 Wretched Confluence