"The next spell is the FIRE BLAST. This one is a fire type magic offense and this spell is used to set its target ablaze. Is there anyone of you who would like to give it a try?"
It was a brawny-looking man who volunteered for the demonstration. Due to insufficient amounts of mana, amateur warlocks and sorceresses like Mu Lingxi and the other new students cannot cast these mild offensive spells yet.
Teacher Nana strictly instructed the student who volunteered to focus his attention to a nearby tree just outside their classroom.
She first taught him the spell and only when the student was able to enchant the spell properly did she allow him to use his wand to finally cast the spell for real.
As soon as the brawny-looking student warlock enchanted the spell that sounds like 'Fir-Kagya', the tree that was standing outside a second ago, exploded.