Arcane Bloodline Familiar: Spell Catalyst (Su) - Spells you cast that target your familiar are treated as having a caster level 2 levels higher than your actual caster level.
So... Hypothetically speaking - if Mr. Crispy (the Familiar) moves into the enemies square, and is subsequently hit by my fireball, what happens?
A) The Spell is AoE and isn't "Targeting" so nothing happens.
B) The Caster Level is increased only against Mr. Crispy and the other targets in the AoE are affected normally.
C) The Caster Level is increased for all targets of Fireball if Mr. Crispy is in the AoE when it is cast.
Obviously, this Strategy is only going to be used on Fire Resistant familiars or Figmented Archetype familiars - to prevent Mr. Cripsy from a preemptive death due to his master exploiting him for "target" practice. But does this work at all?