As a side note, I don't have any personal feelings about DMs playing this spell one way or another. But I do enjoy the academic endeavor to determine what is a house rule and what is RAW.
outlier said:
I disagree with you on the DR question. The spell allows neither SR nor ST, so the damage is just non-magical slashing damage like any other weapon attack.
Hypersmurf said:
Andargor - would you apply DR to the damage of a weapon under the effects of a Dancing Blade spell? (CArc - effectively gives a weapon the Dancing quality temporarily.)
What about an axe hurled by means of a Telekinesis spell?
I'm going to put my "strict reading" hat on.
SRD 3.5 said:
Special Spell Effects
...
Attacks: Some spell descriptions refer to attacking. All offensive combat actions, even those that don't damage opponents are considered attacks. Attempts to turn or rebuke undead count as attacks. All spells that opponents resist with saving throws, that deal damage, or that otherwise harm or hamper subjects are attacks. Spells that summon monsters or other allies are not attacks because the spells themselves don't harm anyone.
This is a fairly broad statement, indicating that any use of a spell to harm or hamper another is an "attack", save for summoning.
SRD 3.5 said:
Damage Reduction
...
Spells, spell-like abilities, and energy attacks (even nonmagical fire) ignore damage reduction.
This is also a very broad statement saying that any attacks by spells ignore damage reduction. Notice the mention that "even nonmagical fire" is included. Hence, Conjuration (Creation) spells that allow no save and no SR qualify for this clause, even if the result or effect is nonmagical.
First, Hyp's examples:
Dancing Blade has a Target entry of "One Sword". It is fairly clear that although this is an attack, the spell is cast on the sword. Ergo, damage reduction would apply.
Telekinesis is similar: Target object(s) are indicated that can be hurled. Much the same situation as above. However, if you fling a creature against a wall, it is disputable if DR would apply, since you are "harming or hampering" it directly.
Some other spells for you:
Black Tentacles: it specifies an Area, doesn't allow saves or SR, but it does ignore DR.
Mage's Faithful Hound: It's an Effect (Phantom Watchdog), so all indications are that DR would not apply.
Wall of Thorns: No save, no SR. Effect, wall of thorny brush. "Harming and hampering" pretty clear here, no DR.
However
whirling blade is a bit of an inconsistency: you are hurling a weapon (as the
telekinesis example), but it's actually an Area spell. It says "Effect", but a 60-ft. Line is an Area, confusing. Technically, I would say that DR doesn't apply, but I could see why a DM would allow it considering how poorly the spell is written.
My humble opinion, and all that.
Andargor