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Message: <blockquote data-quote="Noumenon" data-source="post: 5777830" data-attributes="member: 70102">The impetus for this question was a faithful hound in Castle Whiterock, which the designer put inside the door so it would bite the first person through, instead of outside where it could see what was going on. The text implied the hound would function as normal.With Alarm, I guess it was all the stuff it can do up to a mile away, making it seem like it ignored walls. And there are spells like Dominate Person that let you affect things throughout an entire plane. So I'm seeing that line of effect doesn't apply to everything a spell does. It applies mainly to 1) targeting and 2) bursts, cones, cylinders, and emanations. But with the second group it's line of effect from their origin that matters, not from you, which was another thing that was confusing me about spells working when you didn't have line of effect to them. This seems right. It's a little weird because of the line "The hound sees invisible and ethereal creatures," but it's a strict reading of the rules, and you could say it detects the creature through the door by scent. After pondering countering an Ice Storm by covering its origin point with a hemisphere from Wall of Ice, I'm not sure you're right about that. I found <a href="http://www.d20srd.org/srd/magicOverview/spellDescriptions.htm" target="_blank">this</a> about cylinders specifically: Or as page 176 seems to put it, the entire circle counts as the cylinder's origin point. But seeing as how there are only two cylinder spells in the entire SRD (Ice Storm and Flame Strike), I think I accidentally stumbled on a special case. I get the general idea.</blockquote>

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