Cabal Stronghold

{T}: Add {C}.
{3}, {T}: Add {B} for each basic Swamp you control.

Swamp

{2}, {T}: Add {B} for each Swamp you control.

All Rats have fear.
{T}, Sacrifice a Rat: Create X 1/1 black Rat creature tokens, where X is the number of Rats you control.

This creature gets +1/+0 for each other Rat you control.
A deck can have any number of cards named Rat Colony.

Equipped creature gets +1/-1.
Whenever equipped creature dies, draw two cards.
Equip {1}