so, just to clarify; a gaze attack needs line of effect?? And even though you can see through a Resilient Sphere it blocks that?
Actually, my reading of the
gaze attacks description would suggest that it needs line of sight (both ways) but not line of effect. If it only needed line of effect, then looking away would not stop it. However, looking away
does stop a gaze attack, so obviously line of effect isn't powering it.
Now, whether a Resilient Sphere blocks line of sight in either direction, I don't know. The color & opacity of the sphere is not mentioned in the SRD. The material component is a crystal, so that implies the sphere is crystal clear, if you want to go that way. In such a case, the gaze would totally work, I think. However, the description says nothing gets through it, so I'd say it's equally reasonable to rule that
nothing gets through -- no sounds, no visuals, no spells, nada. No line of sight, no line of effect.
I wouldn't be surprised to learn that the errata clarified this, or that an official FAQ addresses this.