U/R Twin
A Modern deck, by David Caplan
1st place at a tournament in Toronto, Canada on 2013-03-03

Maindeck:

Artifact Creatures
2 Spellskite

Creatures
4 Deceiver Exarch
4 Pestermite

Enchantments
4 Splinter Twin (Banned in Modern)

Instants
3 Dispel
3 Lightning Bolt
2 Remand
3 Spell Pierce

Legendary Creatures
2 Kiki-Jiki, Mirror Breaker

Sorceries
2 Flame Slash
4 Serum Visions
4 Sleight of Hand

Basic Lands
6 Island
2 Mountain

Lands
1 Arid Mesa
3 Misty Rainforest
4 Scalding Tarn
3 Steam Vents
1 Stomping Ground
3 Sulfur Falls

Sideboard:
1 Spellskite
3 Blood Moon
3 Ancient Grudge
2 Counterflux
2 Echoing Truth
1 Negate
1 Flame Slash
2 Pyroclasm