Spell immunity and energy substitution

[durath]

If a creature has the spell "spell immunity" cast on them to block the "fireball" spell what happens if they are hit by a fireball that is modified by the energy substitution feat.

Does spell immunity still stop the newly modified "iceball" or "sonicball"?

I'm inclined to say that spell immunity would still work since it is not a different spell just a modified version of the spell warded against. What do you all say?

 

[Hammerhead]

It's still fireball, although altered by metamagic. Spell Immunity works.

 

[Crothian]

Meta magic feats do not change what the base spell is. So, all that matters for spell immunity is what the base spell is.

 

[kreynolds]

Crothian and Hammerhead are correct. Also, you can counterspell an energy substituted (acid) Fireball with a plain ol' fireball as well.