Grixis Twin
A Modern deck, by Harlan Firer
1st place at a tournament in Staunton, Virginia, United States on 2015-05-16
As reported at www.starcitygames.com

Maindeck:

Artifact Creatures
1 Spellskite

Creatures
4 Deceiver Exarch
2 Pestermite
3 Snapcaster Mage

Enchantments
3 Splinter Twin (Banned in Modern)

Instants
2 Cryptic Command
1 Dispel
1 Electrolyze
1 Kolaghan's Command
4 Lightning Bolt
4 Mana Leak
2 Spell Snare
2 Terminate

Legendary Creatures
1 Kiki-Jiki, Mirror Breaker
2 Tasigur, the Golden Fang

Sorceries
4 Serum Visions

Basic Lands
3 Island
1 Mountain
1 Swamp

Lands
1 Blood Crypt
1 Bloodstained Mire
1 Cascade Bluffs
1 Desolate Lighthouse
4 Polluted Delta
4 Scalding Tarn
3 Steam Vents
2 Sulfur Falls
1 Watery Grave

Sideboard:
1 Engineered Explosives
2 Vedalken Shackles
1 Spellskite
1 Counterflux
1 Dispel
1 Kolaghan's Command
1 Murderous Cut
1 Negate
1 Terminate
1 Olivia Voldaren
1 Tasigur, the Golden Fang
1 Keranos, God of Storms
1 Anger of the Gods
1 Talrand's Invocation