Benefit: Choose one energy type: acid, cold, electricity, or fire. You may replace a spell’s normal damage with that energy type or split the spell’s damage, so that half is of that energy type and half is of its normal type.
You could prepare an acid fireball, but as you cast it just do regular (full) fire damage, correct?
Just to be sure.
Don't see why not. You just wasted a 4th level slot though.
Well, not really, you still used the third level slot, but sure.
What Saldiven said. Unless you have the Magical Lineage(fireball) trait.
Benefit: Choose one energy type: acid, cold, electricity, or fire. You may replace a spell’s normal damage with that energy type or split the spell’s damage, so that half is of that energy type and half is of its normal type.You could prepare an acid fireball, but as you cast it just do regular (full) fire damage, correct?
Just to be sure.
Now class specific, possible rewording of this question.
Does a Wizard need to choose the damage split (half or full acid), when they prepare the elemental spell?
I kind of wonder if elemental spell metamagic can be used with spells like Stone Call that deal damage, but not elemental damage, bludgeoning damage in this case. A lesser rod of elemental metamagic (cold), with rime spell could be interesting. Basically no save, no spell resist entangle over a large area as a 3rd level spell.