the rogue in the group i dm for purchased a ring of invisibility during our last session and this brought up a few questions that i wasn't sure the answer to. since the ring of invisibility can be activated as many times per day as she wants, does this mean that she can sneak attack every other round, activating the ring one round, dealing sneak attack damage the next?
also, the description of the ring says that it is per the spell. does this only last a set number of rounds, or does it last until the rogue attacks? it seems that if it lasts a set number or rounds, it would depend on the level of the creator of the ring...which, it would seem, would make the price fluctuate.
anyway, if anyone could clarify this for me, i would greatly appreciate it. thanks!
Standard action to activate the ring, so no Attack and cloak, every round, but yes to every other round. (Much better to flank and Sneak every round)
Ring of Invisibility "Description: By activating this simple silver ring, the wearer can benefit from invisibility, as the spell." So I would say that your remain Invisible until you attack.
If it said "By activating the ring you benefit from the Invisiblity Spell" I would say there was a time limit of 3 Minutes (As per the duration of the spell for a 3rd level caster)
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Short answer: Yes, he can sneak attack every other round. It's a Standard to activate, so activate one round, then next round a single sneak attack. Note that this is subject to all the issues with Invisibility: ceasing after one attack, as well as being negated by See Invisibility (and True Seeing, Blindsight, blah blah blah).
Second answer: The ring's Caster Level is 3rd. Use duration, as well as all other variables as if a 3rd level caster is casting Invisibility.
It is possible to make custom rings with different durations, but 3rd level is the minimum so the cheapest ring is 20,000 gp. A ring that lasts 4 minutes per activation would cost 28,800 gp (Spell level x caster level x 1,800 gp x 2) for example.
For the attack sequence, note that it's a time-consuming tactic that costs the character 2 rounds of actions, and unless they are moving around any intelligent enemy will catch onto the tactic and target the last square/nearby squares.
thank you all for your answers!
It is possible to make custom rings with different durations, but 3rd level is the minimum so the cheapest ring is 20,000 gp. A ring that lasts 4 minutes per activation would cost 28,800 gp (Spell level x caster level x 1,800 gp x 2) for example.
Actually that would be up to the DM, including whether or not he would include it in his/her campaign.
-James
Correct, that's why I note it us a custom ring...
As the OP is the GM for the group, he can make the call for allowing such items.
Strangely noted that the ring of invisibility's caster level is 3, while you must be 7th level to take Forge Ring.
The ring does not have a duration. It is a continuous effect and is priced as such according to the chart on page 550. Lvl (2)x CL(3)x 2,000 g.p then doubled for having a duration in minutes as per the sub notation 2* under the chart.
So yes standard action to activate, then invisible all day long until you break the condition of the spell by attacking.
You can forge magic items at a lower caster level then needed for the feat and your current level to make them cheaper.
I'm with David Thomassen and Paraxis. You get the effect of the spell from the ring, which is:
The creature [wearing the ring] becomes invisible. If the recipient is a creature carrying gear, that vanishes, too. If you cast the spell on someone else, neither you nor your allies can see the subject, unless you can normally see invisible things or you employ magic to do so.
Items dropped or put down by an invisible creature become visible; items picked up disappear if tucked into the clothing or pouches worn by the creature. Light, however, never becomes invisible, although a source of light can become so (thus, the effect is that of a light with no visible source). Any part of an item that the subject carries but that extends more than 10 feet from it becomes visible.
Of course, the subject is not magically silenced, and certain other conditions can render the recipient detectable (such as swimming in water or stepping in a puddle). If a check is required, a stationary invisible creature has a +40 bonus on its Stealth checks. This bonus is reduced to +20 if the creature is moving. The spell ends if the subject attacks any creature. For purposes of this spell, an attack includes any spell targeting a foe or whose area or effect includes a foe. Exactly who is a foe depends on the invisible character's perceptions. Actions directed at unattended objects do not break the spell. Causing harm indirectly is not an attack. Thus, an invisible being can open doors, talk, eat, climb stairs, summon monsters and have them attack, cut the ropes holding a rope bridge while enemies are on the bridge, remotely trigger traps, open a portcullis to release attack dogs, and so forth. If the subject attacks directly, however, it immediately becomes visible along with all its gear. Spells such as bless that specifically affect allies but not foes are not attacks for this purpose, even when they include foes in their area.
It doesn't cast the Invisibility spell, so Invisibility's casting time, components and duration don't come into play.
<Shrug>
It explicitly had a duration under 3.5 tied to the caster level of the ring (per the old FAQ--yes I know it's not in force with Pathfinder, but it does set precedent). It's how I've played with the ring for the last decade under 3.x rules. Pathfinder could treat it differently, although I've seen no such indication.
Of course, having a duration that is infinitely renewable vs. being continuous is a pretty small difference most of the time (unless, of course, a character can't use the command word for some reason to re-up the spell). From my perspective, the pricing works out slightly better using the Command Word pricing (with a GM adjudication to double the cost as a 1 min/lvl spell--yes, I know the superscript 2 is not on Command Word) vs. the Continuous price. The most important issue for this, I think, is for the GM to make a decision one way or another and then be consistent in application for the rest of the game.