Quote from aleixarboix »You run 4 urborg 4 muta ? Or 3/3? Pack rat is very slow
4/4 in main. Run 13 Swamps, 2 Polluted Delta's, 4 Mutavaults, 4 Urborg. You could also run Nezumi Shortfang as an option as that has seen some play but very rarely. Pack Rat you say is "very" slow; however, if your opponent cannot deal with it in 2 turns the game is over. With the exhaustion from discard, Rats can be very threatening. That is why many choose to run 3-4 in their Sideboard as a creature package.