Perception and intelligent magic items


Rules Questions


Hi, Noob question here.

Let's say you have designed an intelligent magic item with senses. Now you would like it to stand guard over you and your gear while you sleep.

Does that mean the magic item needs ranks in perception to be a better guard? What if it has Blindsense? Doesn't it automatically sense anything it has line of effect to? Would that make a perception rank irrelevant?

Thanks for your input.


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Intelligent items can make skill checks just like PC's can. If a skill can be used untrained, and the intelligent item has the ability to use it, then it will. (i.e. don't expect your sword to climb or swim unless it can animate itself).

Quote from PRD:

Blindsense: Other creatures have blindsense, a lesser ability that lets the creature notice things it cannot see, but without the precision of blindsight. The creature with blindsense usually does not need to make Perception checks to notice and locate creatures within range of its blindsense ability, provided that it has line of effect to that creature. Any opponent that cannot be seen has total concealment (50% miss chance) against a creature with blindsense, and the blindsensing creature still has the normal miss chance when attacking foes that have concealment. Visibility still affects the movement of a creature with blindsense. A creature with blindsense is still denied its Dexterity bonus to Armor Class against attacks from creatures it cannot see.

So, if the item had blindsense (and the ability to communicate) then it could scream or mentally poke the owner or whatever and let them know someone was about.
If the critter coming close was hiding or invisible though it would be very difficult for the item to pin it down for the owner, however.

So what does this mean? This means that an invisible or stealthy person could still try to sneak up on you even with the item keeping watch. The item would sense that they are nearby but would have a difficult time telling you exactly where they were. A perception check for it or you would help nail it down,d epending on the ability(or abilities) used by whoever was coming.

my .02

-S

RPG Superstar 2011 Top 4

If I am correct you could make an Intelligent Ring of Protection +1 for 5,500gp that had 5 ranks in Perception and could scream if it saw anything in the dark up to 30ft. A command word item that gives you 8 hours of the alarm spell would cost 7.800gp.

Base Item;
Ring of Protection +1 2,000gp
Int 10 +0
+5 to Perception +2500gp
Speech +500gp
Senses 30ft +0
Darkvision +500gp


Scipion del Ferro wrote:

If I am correct you could make an Intelligent Ring of Protection +1 for 5,500gp that had 5 ranks in Perception and could scream if it saw anything in the dark up to 30ft. A command word item that gives you 8 hours of the alarm spell would cost 7.800gp.

Base Item;
Ring of Protection +1 2,000gp
Int 10 +0
+5 to Perception +2500gp
Speech +500gp
Senses 30ft +0
Darkvision +500gp

Cool, but Empathy is free. Couldn't the ring wake you with a "spidey sense" feeling? :-)

RPG Superstar 2011 Top 4

Sure, but Speech is only 500gp and then it can sing you to sleep.


Selgard wrote:

So, if the item had blindsense (and the ability to communicate) then it could scream or mentally poke the owner or whatever and let them know someone was about.

If the critter coming close was hiding or invisible though it would be very difficult for the item to pin it down for the owner, however.

Actually, it could do a pretty good job of locating the critter. Blindsense will tell you which square it's in. Assuming the item can communicate concepts like "10 feet to the left of the fire", the owner could target the critter with no miss chance using an effect that targets an area, like Flaming Sphere or Faerie Fire. Attacking with a sword will have the 50% miss chance, but there's no need to figure out which square to attack.


Dire Hobbit wrote:

Hi, Noob question here.

Let's say you have designed an intelligent magic item with senses. Now you would like it to stand guard over you and your gear while you sleep.

Does that mean the magic item needs ranks in perception to be a better guard? What if it has Blindsense? Doesn't it automatically sense anything it has line of effect to? Would that make a perception rank irrelevant?

Thanks for your input.

Yeah, just give it blindsense.

You can give the item telepathy for +1000 gp to the base price, which will then allow the item to automatically sense and locate anything within its range, and then telepathically communicate with the owner.
You could even make it a dancing weapon, and add the ability to cast greater invisibility 1/day for +11,200, so then the item wakes you up telepathically, it goes invisible, you loose it so it starts to fight on its own as soon as the stealthy guy comes adjacent to you, without him even knowing you are awake,or that there is an invisible weapon about to hit his flat foot. Since it says that the dancing weapon is treated as if the owner is wielding it and uses his BAB, doesn't that mean your extremely expensive intelligent longsword of wounding would get its 20th level rogue owner's +10d6 sneak attack against this stealthy, unknowing attacker?

RPG Superstar 2011 Top 4

If you're going to give it greater invisibility once a day in case of surprises like I'd say having it cast that on you while it wakes you would be the way to go. Then you get to surprise them!


Scipion del Ferro wrote:
If you're going to give it greater invisibility once a day in case of surprises like I'd say having it cast that on you while it wakes you would be the way to go. Then you get to surprise them!

Yeah, I don't know why I didn't think of that. Hahaha

You could even give it Invisibility Sphere, which is only a third level spell


Scipion del Ferro wrote:

A command word item that gives you 8 hours of the alarm spell would cost 7.800gp.

More like 1,400 unless you planned to need more then one alarm spell per day.

RPG Superstar 2011 Top 4

Demosthenes wrote:
Scipion del Ferro wrote:

A command word item that gives you 8 hours of the alarm spell would cost 7.800gp.

More like 1,400 unless you planned to need more then one alarm spell per day.

Because Alarm lasts 2 hours per level, you would want at least 8 hours worth of alarm. So 4th caster level.

Spell level (1) x Caster level (4) x 1,800gp for a command word item. = 7,200gp?

...I don't remember how I got 7,800 but it was something along those lines. I have no idea where you came up with 1,400gp though.

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