Main deck (60) 3 Duress 4 Marrow-Gnawer 2 Ogre Slumlord 4 Pack Rat 4 Piper of the Swarm 4 Rancid Rats 14 Rat Colony 2 Sign in Blood 19 Swamp 4 Swarmyard Sideboard (11) 2 Feed the Swarm 2 Grim Haruspex 2 Hero's Downfall 2 Mutilate 2 Throat Slitter 1 Tragic Slip