To be honest, if they were humanoid with the same characteristics as their insect counterpart....ants would be world class threat. Definitely not a army I would want to come up against, cheats or no.
Also, poison and fire are usually quite good for swarming enemies. Might be bad for the surroundings for a while, but better than dying.
@SingLove
Honestly? They couldn't possibly be humanoid and keep their ant characteristics without the plot umbrella of 'magic'.
Even in prehistoric times when the oxygen content was higher and there were fewer birds to kill them off, the largest ever insect was a dragonfly. And it was only around the size and weight of a crow.
Honestly I thought that the two girls would be the culprits, because they fucked up while showing off their supposed skill. I'm fine with this, though.