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Illusions, lighting, and reflectance
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<blockquote data-quote="Dausuul" data-source="post: 7547525" data-attributes="member: 58197"><p>Vision depends entirely on light. You see things when light hits your eyes.</p><p></p><p>If an illusion cannot block light (or appear to block light), then it is transparent and you can see things behind it.</p><p></p><p>If an illusion cannot create light (or appear to create light), then you can't see the illusion at all.</p><p></p><p>If an illusion can block/create reflected light but not emitted light, then things start to get really weird. The sun cannot be hidden by an illusion, but the moon can. You can discern an illusion simply by angling so that it is between you and a light source. Trying to draw such distinctions is far more complicated than simply saying that an illusory wall in front of a light source has the effect of blocking that light source (for creatures that believe the illusion).</p><p></p><p></p><p></p><p>Please give an example of how this would happen. How would you "recreate" another spell using <em>silent illusion</em>? Keep in mind that <em>silent illusion</em> is automatically revealed by physical contact and can't move except when the caster uses an action to move it; an illusory blindfold over a creature's eyes would fail on multiple fronts (first because the creature is in contact with the blindfold, and second because the creature could take a single step and the blindfold would no longer be over its eyes).</p></blockquote><p></p>
[QUOTE="Dausuul, post: 7547525, member: 58197"] Vision depends entirely on light. You see things when light hits your eyes. If an illusion cannot block light (or appear to block light), then it is transparent and you can see things behind it. If an illusion cannot create light (or appear to create light), then you can't see the illusion at all. If an illusion can block/create reflected light but not emitted light, then things start to get really weird. The sun cannot be hidden by an illusion, but the moon can. You can discern an illusion simply by angling so that it is between you and a light source. Trying to draw such distinctions is far more complicated than simply saying that an illusory wall in front of a light source has the effect of blocking that light source (for creatures that believe the illusion). Please give an example of how this would happen. How would you "recreate" another spell using [i]silent illusion[/i]? Keep in mind that [i]silent illusion[/i] is automatically revealed by physical contact and can't move except when the caster uses an action to move it; an illusory blindfold over a creature's eyes would fail on multiple fronts (first because the creature is in contact with the blindfold, and second because the creature could take a single step and the blindfold would no longer be over its eyes). [/QUOTE]
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Illusions, lighting, and reflectance
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