U/R Dragons
A Standard deck, by Sean McKeown
143rd place at a tournament in Somerset, New Jersey, United States on 2015-08-28

Maindeck:

Artifacts
2 Perilous Vault (Not currently legal in Standard)

Creatures
2 Icefall Regent (Not currently legal in Standard)

Instants
3 Clash of Wills (Not currently legal in Standard)
3 Dig Through Time (Not currently legal in Standard)
2 Dissolve (Not currently legal in Standard)
3 Draconic Roar (Not currently legal in Standard)
1 Dragonlord's Prerogative (Not currently legal in Standard)
4 Fiery Impulse (Not currently legal in Standard)
4 Silumgar's Scorn (Not currently legal in Standard)

Legendary Creatures
1 Dragonlord Atarka (Not currently legal in Standard)
3 Dragonlord Dromoka (Not currently legal in Standard)
3 Dragonlord Ojutai (Not currently legal in Standard)
1 Dragonlord Silumgar (Not currently legal in Standard)

Legendary Planeswalkers
1 Ugin, the Spirit Dragon (Not currently legal in Standard)

Basic Lands
4 Island

Lands
4 Crucible of the Spirit Dragon (Not currently legal in Standard)
1 Flooded Strand (Not currently legal in Standard)
1 Frontier Bivouac (Not currently legal in Standard)
4 Haven of the Spirit Dragon (Not currently legal in Standard)
4 Mystic Monastery (Not currently legal in Standard)
4 Shivan Reef (Not currently legal in Standard)
1 Temple of Enlightenment (Not currently legal in Standard)
4 Temple of Epiphany (Not currently legal in Standard)

Sideboard:
1 Perilous Vault (Not currently legal in Standard)
3 Encase in Ice (Not currently legal in Standard)
1 Dragonlord's Prerogative (Not currently legal in Standard)
2 Negate
2 Voyage's End (Not currently legal in Standard)
1 Dragonlord Silumgar (Not currently legal in Standard)
1 Silumgar, the Drifting Death (Not currently legal in Standard)
1 Ugin, the Spirit Dragon (Not currently legal in Standard)
3 Anger of the Gods (Not currently legal in Standard)