[This is a complete surprise, indeed. Not only the rat was unaffected by his light spell unlike the one he just killed, but the fact that it managed to deflect Gladion's physical attack as well.

When Gladion mentions about the timing of the elemental rotation, Augustine realizes it may be a problem for them.]

If we try to randomly attack it with any spell to find out the timing though, we'll end up exhausting ourselves.

There's got to be another way.