Profession Level reaching Level 5 was a crucial threshold at which certain spellcasting professions underwent a qualitative transformation and became what people called "spell lords."
The main reason was that spellcasters who reached this level truly gained the ability to cast Third Circle spells independently.
"Fly," "Remove Curse," "Speak with Dead," "Mass Healing Word"...
Many tremendously powerful and practical spells were gathered at this level, raising spellcasters' versatility and utility another step. Whether facing intense combat or complicated situations during a mission, they gained countless more ways to solve problems.
A Level 5 Mage with a complete Spell List could handle nearly all troubles that did not greatly exceed their Profession Level, provided they were fully prepared.
And if they had several reliable teammates protecting them, then even when facing ferocious monsters with high Challenge Ratings, it was not impossible to deal with them.
They could almost single-handedly raise their party's overall strength by an entire tier.
Of course, limited by their own energy, talent, and time, as well as the increasingly vast spell library that came with rising Profession Levels, not every Spellcaster could memorize a large number of spells.
Perhaps they initially tried to learn a little of everything, searching for their specialties and interests. But as they gradually delved deeper into the Arcane path, the types of spells they memorized also became increasingly specialized and subdivided according to their own schools.
Often, they would specialize in only one category, at most learning some powerful, broadly applicable magic from other schools as supplementary options.
And among the spell lists more vast than the stars in the sky, there was one famous spell that almost every Mage who reached Level 5 would place on their must-learn list—a powerful spell that made countless non-spellcasters tremble in fear.
—"Fireball"!
It had