Jump-in packs based on paper products should match the paper lists as closely as possible and the manabases should not be left completely to the auto add lands function because it doesn't accurately view Hybrid mana. I picked the Reinforced and Azula packs which basically gives you a monoblack list. The client auto filled the lands with 6 forests and mountains on top of 2 tap duals and 2 thriving moors. This makes the deck almost unplayable. I had to Swampcycle for my first Swamp in a monoblack list...