What does having a negative caster level mean?

[Thanee]

It indirectly says, that you need the minimum caster level to cast the spell.

Bye
Thanee

 

[3d6]

Aha. Then you need [(spell level x2)-1] as a minimum caster level?

Bye
Thanee

I think it would vary based on the class. The minimum caster level for a sorcerer to cast a spell would be spell level * 2, etc.

 

[Thanee]

That makes sense. Was mainly thinking about the most basic casters there.

Bye
Thanee

 

[3d6]

Now that I think about it, the minimum caster level for a sorcerer to cast a spell can't be represented by a formula. You have to be 1st level to cast 0-level and 1st-level spells, then the progression is spell level * 2.