Lets say if you have two monsters stacked on top of eachother to your right, and one monster alone to your left, the ones on your right will recieve two 2k hits and the one on your left will recieve three 2k hits. Add another monster to your right and they only receive one 2k hit each, you can keep adding more monsters to your right but the minimum they will receive is one hit, so they'll always at least be hit.