16 Swamp
4 Swarmyard
4 Cremate
4 Echoing Return
4 Piper of the Swarm
16 Rat Colony
4 Sign in Blood
4 Swarm of Rats
3 Terror
2 Thrumming Stone
4 Unearth
Sideboard:
4 Dark Ritual
1 Pack Rat
7 Rat Colony