Magical Lineage Trait question

[Karse]

Does this trait can lower the metamagic cost to 0 or would be a minimum of 1?

[Alceste008]

Karse wrote:

Does this trait can lower the metamagic cost to 0 or would be a minimum of 1?

The cost can be lowered to 0 but not below 0 if I remember correctly. The reason is that the trait does not actually lower the spell level just the metamagic feat's level tax. I think SKR stated this in a previous thread.

[David Thomassen]

Magical Lineage
"Magical Lineage: One of your parents was a gifted spellcaster who not only used metamagic often, but also developed many magical items and perhaps even a new spell or two—and you have inherited a fragment of this greatness. Pick one spell when you choose this trait. When you apply metamagic feats to this spell, treat its actual level as 1 lower for determining the spell's final adjusted level."

What this is missing is the statement "This cannot be used to lower the casting level of the original spell"