Potent Rodent 2.0
Featured by Matt Higgs on 2013-03-24 (Standard)
As written about in http://www.starcitygames.com/php/news/article/25884.html

Maindeck:

Artifacts
2 Staff of Nin (Not currently legal in Standard)

Creatures
3 Blood Artist (Not currently legal in Standard)
4 Crypt Ghast (Not currently legal in Standard)
4 Pack Rat (Not currently legal in Standard)
4 Ravenous Rats (Not currently legal in Standard)

Enchantments
2 Underworld Connections (Not currently legal in Standard)

Instants
2 Murder (Not currently legal in Standard)
3 Victim of Night (Not currently legal in Standard)

Legendary Creatures
1 Mikaeus, the Unhallowed (Not currently legal in Standard)

Legendary Planeswalkers
1 Liliana of the Dark Realms (Not currently legal in Standard)

Sorceries
3 Farseek (Not currently legal in Standard)
4 Mutilate (Not currently legal in Standard)
3 Sign in Blood (Not currently legal in Standard)

Basic Lands
14 Swamp

Lands
2 Golgari Guildgate (Not currently legal in Standard)
4 Overgrown Tomb (Not currently legal in Standard)
4 Woodland Cemetery (Not currently legal in Standard)

Sideboard:
4 Deathrite Shaman (Not currently legal in Standard)
4 Abrupt Decay (Not currently legal in Standard)
3 Golgari Charm (Not currently legal in Standard)
3 Duress
1 Wit's End (Not currently legal in Standard)