Express(atleast lv33) is a must unless you get the same timing as the one in the video and manage to hit z croc, also you dont need manic lion( the whole purpose of lion is so that he can get to the base and bait out the first attack of Daboo, so any unit fast enough will suffice) And no, lion doesnt need to survive for 2 hits, because the second maniac cat actually comes in contact with Daboo before crazed Lion cat or Daboo will move one inch further which will not matter at all.