Divine interference and anti-magic field

[udalrich]

Playing first edition, a cleric casts antimagic field. On his next turn, he attacks an enemy dwarf, rolling a natural 20. Can a cleric ally of the dwarf, who is completely outside the AM field, use divine interference to force the cleric to reroll the attack?

I am looking for a strict rules interpretation and what would be reasonable for the GM to rule.

Since divine interference requires sacrificing a spell, it seems reasonable that anti-magic field should negate it. The feat does not give an Ex/Su/Sp rating, but that is something that a feat creator would not neccesarily think about.

PFSRD wrote:

Benefit: As an immediate action, when an enemy within 30 feet hits an ally with an attack, you can sacrifice a prepared divine spell or (if you are a spontaneous caster) an unused spell slot and make the enemy reroll the attack roll. The second attack roll takes a penalty equal to the level of the spell you sacrifice. You must sacrifice a spell of 1st-level or higher to use this ability. Whether or not the second attack is successful, you cannot use this effect on the same creature again for 1 day.

[Bjørn Røyrvik]

Strict RAW readings I'll leave to someone else, but it is divine, i.e. supernatural, intervention powered by a spell, so I'd rule it as Su.

[zza ni]

strictly raw it should work, like spells that conjur an object outside and shoot it into the area.
that said, idk if I'd allow the player to use his spells to effect something inside an anti-magic area directly.
but on the other hand the feat is not magical by itself.

id have him re-roll but take no penalty for the spell used. (if the cleric wish to keep it up he still have to sacrifice a level 1+ spell though).
he uses the spell power to launch the intervention at the cleric, his anti-magic null the extra omph of the spell used, but not the supernatural effect.

[ShadowcatX]

There is no strict rules interpretation possible as "most magical effects" is not really a game term explicitly spelled out in RAW. The feat in question requires a caster level, it requires the sacrifice of a spell slot and it comes from the book "ultimate magic" all of which at least seem to indicate that it is a magical ability. I'd rule that it did not function in an antimagic sphere.

[bbangerter]

Your GM will need to decide if the feat is an (Ex) ability (most feats would fall under ex), or an (Su) ability. None of them specify which they are. If it is Su it won't work as line of effect to the target is effectively broken my the AMF.

As ShadowcatX notes, it requires both a caster level, and a spell sacrifice - I personally would rule it Su. The source book is irrelevent IMO, there are plenty of things in that source book that are not "magic". And books, chapters, headings, subheadings, etc are not rules, they are simply organizational structure. They might provide some context, but the book level of context isn't very meaningful.