I just fought the baron and beat him in a most interesting way. I call it the timing kill. Instead of high voltage, high voltage, shock coma, shock coma, retrograde, I did this:
Electron charge (yes, you heard that correctly... it caused the Baron to get two moves in a row)
while waiting for that to wear off, I used electrical storm and free will to recharge myself. On the turn before electron charge wore off:
shock coma
now I get two moves in a row
retrograde
implosion (maxed)
The Baron takes 700% * 200% * 12% * his own health and dies.