Wall of Force versus Anti Magic Ray (from Beholder)

[Magus_Jerel]

You cannot cast a spell into an adjacent room because of two factors: Line of effect, and line of Sight. If I can't see, I have no line of effect...

Finish that sentence. You have no line of effect or line of sight. You fail to illustrate any situation in which line of effect does NOT give you line of sight.

Otherwise, why couldn't you cast Hemisphered Wall of Force, Then cast a cloud kill that would center Inside the hemisphere, after casting it? Why, because you cannot cast Into it, due to the break in the line of effect.

Easy - Cloudkill affects an AREA - and that area is divided by a solid barrier. In this case, that "solid barrier" is both invisible to the naked eye and transparent.

As you intend to argue the spell - A wall of force prevents the TARGETING of magic across it. This is NOT the case. If that were so - teleportation outside the wall would be utterly impossible, as you must target SOMEWHERE to "land".

There is a HUGE difference between targeting and having an unblocked line of effect.

We now see why the "X-ray vision" spells were not converted to third edition... and those that do have "duration concentration".

 

[Xarlen]

""Easy - Cloudkill affects an AREA - and that area is divided by a solid barrier. In this case, that "solid barrier" is both invisible to the naked eye and transparent.""

This doesn't explain why you can't center it inside the hemisphere.

If I cast Wall of Force in a hemisphere formation, and know where it is, then I should be able to cast an area spell inside, unless the Line of Effect is broken.

You need Line of Sight to have Line of Effect (Unless we're talking of an area spell). But just Because you have line of sight doesn't mean you have line of effect.

And, I don't believe you can teleport past a Wall of Force.

 

[Magus_Jerel]

If I cast Wall of Force in a hemisphere formation, and know where it is, then I should be able to cast an area spell inside, unless the Line of Effect is broken.

Area spells have a tendency to declare their areas in terms of more than 1 five foot by five foot "cube". It is IMPOSSIBLE to get 2 5ft by 5ft cubes inside a hemisphere with a 10 foot radus and NOT have them overlap. If an area effect spell only struck "one square" - yes you could.

You need Line of Sight to have Line of Effect (Unless we're talking of an area spell). But just Because you have line of sight doesn't mean you have line of effect.

Actually - that is a property of emanations - not areas. Area effect spells require you to be able to see the area to target it - thx for playing.

And, I don't believe you can teleport past a Wall of Force.

Please read spell description - I ask you to.
allows teleporting around barrier - it does.

 

[Iku Rex]

You can have line of sight without having line of effect.
(Example: Wall of Force, which is a solid barrier, blocks line of effect.)

You can have line of effect without having line of sight.
(Example: Darkness, which "blocks" line of sight, does not block line of effect.)

Area of effect spells can be cast anywhere you have line of effect, regardless of their maximum area.


A quote, since people don't seem too eager to actually read the rules:

Line of Effect: A line of effect is a straight, unblocked path that indicates what a spell can affect. A line of effect is canceled by a solid barrier. It's like line of sight for ranged weapons, except it's not blocked by fog, darkness, and other factors that limit normal sight.

The character must have a clear line of effect to any target that the character casts a spell on or to any space in which the character wishes to create an effect. The character must have a clear line of effect to the point of origin of any spell the character casts. For bursts, cones, cylinders, and emanating spells, the spell only affects areas, creatures, or objects to which it has line of effect from its origin (a burst's point, a cone's starting point, a cylinder's circle, or an emanating spell's point of origin). (SRD)

 

[Xarlen]

I think Iku proved my point for me.

And, Y'don't need the attitude, Mangus.