20 Swamp
4 Altar's Reap
4 Burglar Rat
2 Carrion Rats
2 Cast Down
1 Crypt Rats
2 Doom Blade
4 Drainpipe Vermin
1 Marrow-Gnawer
1 Metallic Mimic
2 Ogre Slumlord
4 Pack Rat
1 Rat Colony
2 Sewer Rats
4 Sign in Blood
4 Typhoid Rats
2 Unmake
Sideboard:
1 Bone Splinters
2 Chittering Rats
2 Gnat Miser
1 Phyrexian Arena
2 Septic Rats
1 Severed Strands