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Mono-Black Devotion
A Standard deck, by Kentarou Yamamoto
7th place at a tournament in Dublin, Ireland on 2013-10-13
As reported at http://www.wizards.com/magic/magazine/article.aspx?x=mtg/daily/eventcoverage/ptths13/Top_8_Decks

Maindeck:

Creatures
4 Desecration Demon (Not currently legal in Standard)
4 Gray Merchant of Asphodel (Not currently legal in Standard)
4 Lifebane Zombie (Not currently legal in Standard)
2 Pack Rat (Not currently legal in Standard)

Enchantments
4 Underworld Connections (Not currently legal in Standard)

Instants
2 Devour Flesh (Not currently legal in Standard)
4 Doom Blade (Not currently legal in Standard)
4 Hero's Downfall (Not currently legal in Standard)

Legendary Enchantment Artifacts
2 Whip of Erebos (Not currently legal in Standard)

Legendary Enchantment Creatures
1 Erebos, God of the Dead (Not currently legal in Standard)

Sorceries
4 Thoughtseize (Not currently legal in Standard)

Basic Lands
16 Swamp

Lands
4 Mutavault (Not currently legal in Standard)
4 Temple of Silence (Not currently legal in Standard)

Legendary Lands
1 Nykthos, Shrine to Nyx (Not currently legal in Standard)

Sideboard:
1 Pithing Needle (Not currently legal in Standard)
4 Xathrid Necromancer (Not currently legal in Standard)
1 Devour Flesh (Not currently legal in Standard)
4 Pharika's Cure (Not currently legal in Standard)
1 Erebos, God of the Dead (Not currently legal in Standard)
4 Duress