Moon-Lancer said:
a parry is an attack? I dont think i follow.
i don't think munchkin is the word you looking for, i think the word your looking for is "creative". Its also thematic with spiked armor.
I don't see the word "parry" in the defending description
It's how I as a DM envision a Defending weapon working - instead of putting all of its magic woobie into hitting more accurately/harder, it's being used to deflect attacks (the only logical way a weapon can add to your defense).
Thus, if your armor spikes have the Defending property, they're a weapon being wielded to deflect an attack. If you were doing the same with Two-Weapon Defense; 1) you'd suffer the TWF penalties because you're wielding two weapons, and 2) it would be a Shield bonus (as Defending should provide). If you're using them as your sole attack weapon then you're fine.
In the same way that if you had a Heavy Shield, you could enchant it with Defending - but then if you were using that bonus to your AC, that would mean you're using the shield as a weapon, and thus suffering the TWF penalties (unless you're JUST shield bashing).
Similar question: Jimmy Paladin is carrying his Big Steel Shield in his left hand, and wielding his bastard sword in the other. He is also wearing a +3 defending spiked gauntlet, although not using it to attack (he only has one attack per round).
Can he get that +3 to AC if he's not attacking with the gauntlet? I say not without taking TWF penalties, since Defending specifically states that the weapon must be wielded.
Same as with armor spikes, I would rule IMC that to gain the weapon's benefit, you must be using it actively.