D&D 3E/3.5 Multiple Spell Effects (3.5)

[apsuman]

Just a point:
So if you cast web at an area twice over (or overlap two areas of web), then the effects do not stack, and you treat it the same as a single web. Similarly, I'd expect that by the RAW, someone already in the area of a web would not need to make a reflex save when a second web is placed on the area.

OTOH, the general rules for combining magical effects states that for the same effect more than once with differing strengths, for the same effect with differing results, or one effect makes another irrelevant, that the most recent spell works. Since 'grease' covers stuff with grease, I'd say that this falls under "one effect makes another irrelevant" - the area is either covered with grease, or not. One save, one set of checks for movement etc.

I disagree. While the second web would require no more or harder work to move about the webbed area, you would have to make the reflex save each time the spell is cast.