Starbuck_II said:
6 levels in horizon Waller make you immune to harmful effects due to alignment if take Alignment Planar ability. It doesn't matter what the effect is if harmful. So you wo'nt be stunned or killed due to unholy blight or blasphemy.
I don't agree with that reading.
You incur none of the penalties for having an alignment at odds with that of the plane, and spells and abilities that harm those of the opposite alignment don’t affect you.
Blasphemy isn't a penalty for having an alignment at odds with that of the plane; it's nothing to do with the plane. So the only clause that's potentially relevant is the second:
spells and abilities that harm those of the opposite alignment don’t affect you.
So the question is - is Blasphemy a spell that harms those of opposite alignment?
A further and necessary question - does this mean "spells that harm
only those of the opposite alignment"?
For example, if I use the Corrupt Spell feat from BoVD, and cast a Corrupted Fireball, I now have an [Evil] spell. It deals, say, 6d6 damage (3d6 Fire, 3d6 Unholy)... and it damages
everyone. Evil, Neutral, Good. So it's certainly a spell that harms those of opposite alignment - it's an Evil spell and it harms Good people - but it also harms everyone else. Would Aligned Planar Mastery protect you from a Corrupted Fireball? I'd argue no... it's not a spell that harms
only those of opposite alignment, and I think the example indicates that this is the intent of the sentence.
Now, Blasphemy is an Evil spell that doesn't
only harm Good people... it harms Neutral people as well. As such, it's not a spell that harms
only those of opposite alignment, and I think there's room to argue that as such, it is not deflected by Aligned Planar Mastery.
-Hyp.