Monsters that set an entire city on fire whenever you hit them with Fireball? Nixie the Tiefling Sorcerer from One for All will be really sad if she ever finds out she missed this. For her this would be, like, the top thing ever.
Woah bro, firstly, she did not throw the fireball another magician did. Second of all only Toru realized that it smelled like gasoline and that was back in the dungeon. Third, who would expect that the Silver Wolf was alchemically made out of Gasoline?
Also, Lily, the elf, mentioned that her master could only use 7 of the 9 elements. She never revealed what elements she could use, I am guessing water is not one of them.