Can Arcane Eye be noticed with a perception check?

[shadowskinC]

the Spell description:

You create an invisible magical sensor that sends you visual information. You can create the arcane eye at any point you can see, but it can then travel outside your line of sight without hindrance. An arcane eye travels at 30 feet per round (300 feet per minute) if viewing an area ahead as a human would (primarily looking at the floor) or 10 feet per round (100 feet per minute) if examining the ceiling and walls as well as the floor ahead. It sees exactly as you would see if you were there.

The eye can travel in any direction as long as the spell lasts. Solid barriers block its passage, but it can pass through a hole or space as small as 1 inch in diameter. The eye can’t enter another plane of existence, even through a gate or similar magical portal.

You must concentrate to use an arcane eye. If you do not concentrate, the eye is inert until you again concentrate.

Yes it is invisible, but how much is its stealth bonus? Can it be noticed with a perception check? If so, how high should it be? Or does being invisible mean that the Arcane Eye can only be noticed via magical means(detect magic, see invisibility, etc)？

[Fuzzy-Wuzzy]

All sensors have the same properties. (Okay, this one has special movement powers, but otherwise it's a normal sensor.)

CRB, Magic, Divination wrote:

Scrying: A scrying spell creates an invisible magical sensor that sends you information. Unless noted otherwise, the sensor has the same powers of sensory acuity that you possess. This level of acuity includes any spells or effects that target you, but not spells or effects that emanate from you. The sensor, however, is treated as a separate, independent sensory organ of yours, and thus functions normally even if you have been blinded or deafened, or otherwise suffered sensory impairment.

A creature can notice the sensor by making a Perception check with a DC 20 + the spell level. The sensor can be dispelled as if it were an active spell.

Lead sheeting or magical protection blocks a scrying spell, and you sense that the spell is blocked.

[shadowskinC]

Thx, didn't notice it was included in the Magic and Spell rule.

[blahpers]

For an invisible sensor, the DC to notice it is absurdly low. Invisible creatures get an extra +20 while motionless.

[MrCharisma]

blahpers wrote:

For an invisible sensor, the DC to notice it is absurdly low. Invisible creatures get an extra +20 while motionless.

You're forgetting that all invisible sensors constantly make a "wubwubwub" hovering noise. It's only their innate magic that keeps them from being noticed by everyone within 100 feet.

[Kayerloth]

It's also possible the base DC is 0, then add either 40 or 20 depending on if it's moving or not, then spell level, then distance and other factors, and whatever other modifiers the DM thinks relevant.

They do have a tendency whilst making wub wub, glurp noises to be lurking in the dark recesses of the corner of the inn ... similar to the noises the guests make slurping down the local gruel. Which helps avoid detection:P

[blahpers]

MrCharisma wrote:

blahpers wrote:

For an invisible sensor, the DC to notice it is absurdly low. Invisible creatures get an extra +20 while motionless.

You're forgetting that all invisible sensors constantly make a "wubwubwub" hovering noise. It's only their innate magic that keeps them from being noticed by everyone within 100 feet.

This is now my headcanon rationale for scrying sensor Perception DC. Well done.

[DM Livgin]

We gave it a size bonus to stealth as a compromise.