Originally Posted by
zbsouth
Two things, first and most embarrassingly, I did do my math wrong initially. *hangs head in shame*
Second, if I was looking for exactness without waste, I would use thirteen minions. The reason you might have more minions left over occasionally is that sometimes the timing of who starts attacking first is off. If your full set of minions attacks before the queen does she is going to die slightly faster and thus more minions left over. If she attacks first, which I would imagine is rare because you can control when the minions go down, it will take the minions slightly longer. If they start attacking at the same time then 13 is exactly how many you'll need.