This article contains unmarked spoilers for Book 4.
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Wall of Fire Spell is a spell obtained by Donut on Floor 5.
Description
Cost: 15 mana
Target: area around the caster
Duration: unknown
At level one, it creates a 10-meter long, 2-meter high wall of magical fire. If the spell is cast on a flammable surface, the surface will catch fire once the spell ends. The fire can very easily go out of control.
According to Mordecai, it is a common spell that can be very powerful at higher levels.