My question is with regards to how the spell resinous skin works along with related issues (I have provided some relevant text bellow). Firstly I am going to assume that all DR/- is overcome by spell damage, unless the DR/- says other wise or is one of the three primary means of physical damage. If I understand the text and the spell description correctly then normal attacks with the exception of piercing take a DR/5 to there damage. So if the weapon is say a mace then does it by pass the DR/5 despite being part bludgeoning? If the weapon is piercing damage only does it has to do a DC check? I also feel that it is safe to assume that when that when the effects of this spell are triggered it has no bearing on the duration of the spell. Finally will this spell and other transmutation spells like it stack with wild shape? I would think by the time a druid of done casting some of these long term transmutation spells you would end up with some rather funny looking animals.
-spell description
"You coat your body with a resinous substance, protecting you from attacks and binding weapons that strike you. You gain DR 5/piercing, as well as a +4 circumstance bonus to your CMD against disarm attempts and on saving throws against effects that cause you to drop something you are holding. Additionally, you gain a +2 circumstance bonus on combat maneuver checks to initiate a grapple, maintain a grapple, and pin a foe. Any enemy you grapple takes a –2 penalty on attempts to break the grapple and to escape the grapple using Escape Artist. Any weapon, that strikes you becomes stuck unless its wielder succeeds at a Reflex saving throw. Such a weapon can be pulled free of you only with a successful Strength check (DC = your saving throw DC for this spell). This spell has no effect on unarmed strikes or natural weapons."
http://www.d20pfsrd.com/magic/all-spells/r/resinous-skin
-text on DR/-
"The numerical part of a creature's damage reduction (or DR) is the amount of damage the creature ignores from normal attacks. Usually, a certain type of weapon can overcome this reduction (see Overcoming DR). This information is separated from the damage reduction number by a slash. For example, DR 5/magic means that a creature takes 5 less points of damage from all weapons that are not magic. If a dash follows the slash, then the damage reduction is effective against any attack that does not ignore damage reduction."
http://www.d20pfsrd.com/gamemastering/special-abilities#TOC-Damage-Reductio n
I have a couple of typos :(
Bump
So if the weapon is say a mace then does it by pass the DR/5 despite being part bludgeoning?
If it says "and" it always bypasses the DR, if it says "or" it only bypasses it if the wielder specifies that they are doing that type of damage.
Some weapons deal damage of multiple types. If a weapon causes two types of damage, the type it deals is not half one type and half another; all damage caused is of both types. Therefore, a creature would have to be immune to both types of damage to ignore any of the damage caused by such a weapon.
In other cases, a weapon can deal either of two types of damage. In a situation where the damage type is significant, the wielder can choose which type of damage to deal with such a weapon.
If the weapon is piercing damage only does it has to do a DC check?
No.
I also feel that it is safe to assume that when that when the effects of this spell are triggered it has no bearing on the duration of the spell.
Right. If something could shorten the spell duration while the spell is in effect, the spell description would mention it.
thx!