Quoted from swampfire:If SMVE comes out, I might have to get it just to have it next to IM for a year or so. While the rules are shallow in IM, the multiballs are pretty deep, requiring several phases of completion to get the insert flashing. I rarely complete War Machine or Whiplash multiballs unless I have a shield handy to add a ball.
FYI, you can add a ball for the first 20 seconds of War Machine while the big insert is lit.