Dragon with Blindsight see exactly what an invisible pc is doing?

[Lord Thurham]

An invisible spellcaster pulls out a scroll and begins to cast a spell from the scroll. An angry mature adult Red Dragon who is only 10’ away is using his blind-sight(DMG p.73) ability to “See” the character. Regarding what the dragon can see, which of the following statements are true?

1) The dragon can “See” the character casting a spell from a scroll and thus gets an attack of opportunity on the spellcaster.
2) The dragon knows exactly where the character is, but does not “See” the character casting from a scroll and does not get an attack of opportunity.
3) It depends on the spell, if the spell has verbal and somatic components, the dragon can “See” the somatic movements and hear the spell being cast, thus the dragon gets an attack of opportunity.

Is there official clarification somewhere about what Blindsight can “See”?

My interpretation of Blindsight is that the dragon knows exactly where the invisible character is, does not have a miss-chance, and knows exactly what the invisible character is doing (such as casting a spell, shooting a bow, moving thru a threatened square, and etc.) Basically, the dragon really can “See” what’s happening as if the character was not invisible to begin with.

What does everyone here think?

Thanks!

LT

 

[kreynolds]

...makes invisibility and darkness (even magical darkness) irrelevant...

I'd have to go with 1).

 

[hong]

The rationale for AoOs isn't that the attacker gets an extra swing when the defender does something (although it looks like it). It's that the defender is distracted, and so the attacker's swings are more likely to connect. Recall that the attack roll is an abstraction of many individual attacks, which occur continuously throughout the combat round.

Thus it doesn't matter whether or not the dragon "sees" the wizard casting the spell, or what components the spell has. It gets the AoO anyway. The wizard can't keep his attention on dodging the dragon's claws, so is more vulnerable to getting hit.

And yes, the dragon does indeed see the wizard.

 

[Lord Thurham]

From the SRD

Blindsight (Ex): A dragon can ascertain creatures by nonvisual means (mostly hearing and scent, but also by noticing vibration and other environmental clues) with a range of 30 feet x the dragon’s age category.

The above quote is the main reason this has come up in our campaign. Hearing and Scent doesn't quite give you "See Invisibility" is the arguement used against me. However, as mentioned earlier, the Blindsight ability makes invisibility irrelevant. So, it's going back and forth at the moment. I'm looking for something more concrete that says a creature with Blindsight can see what the character is doing.

Thanks

LT

 

[kreynolds]

The above quote is the main reason this has come up in our campaign. Hearing and Scent doesn't quite give you "See Invisibility" is the arguement used against me. However, as mentioned earlier, the Blindsight ability makes invisibility irrelevant. So, it's going back and forth at the moment. I'm looking for something more concrete that says a creature with Blindsight can see what the character is doing.

Use their argument against them. In the simplest terms, See Invisibility makes invisibility irrelevant, right? So does Blindsight. It makes darkness and invisibility irrelevant. That really is all there is to say. Some creatures have limited blindsight, maybe based on just hearing or something, and those can be wierd, but dragons get the full array.

 

[Berk]

It's a dragon. =o) It knows what is going on 10' away from it. Hell, it knows what is going on 200' away from it. =o)

 

[IceBear]

Well knowing where the character is and not having a miss chance makes it pretty irrelevant.

A dragon, with its smell, hearing and intelligence, would probably smell the vellum scroll and the sound of the caster's voice and be able to determine that the caster was using a scroll. If this was an unintelligent creature, then no, I'd probably rule that it had no clue what the caster was doing.

But, if that creature was attacking the caster and the caster was in the threat range, it would get an AoO regardless.

IceBear

 

[Mahali]

The dragon knows exactly where the character is, but does not “See” the character casting from a scroll and does get an attack of opportunity.

Even if the spell is Stilled and Silent the dragon still gets the AoO.

 

[Dursk Starkfire]

unless cast defensively...

 

[Ran]

unless cast defensively...

poor wizard who dos not near a dragon... poor wizards who don't...
hey, he was really annoying when he was one, now that he is two hundred he is gonna b a lot more annoying!!!