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<blockquote data-quote="jgsugden" data-source="post: 1419990" data-attributes="member: 2629">Clever DMs can hide magic traps from detect magic.&nbsp; A thin sheet of lead can block detect magic, so if the trigger for the magical effect is blocked from view by a thin sheet of lead (or 1&quot; of common metal, etc ...), then the magic will be hidden from the spell.How can this be used? It is best used with certain triggers: Sound, Touch and Timed are the best traptriggers for magic traps covered by lead. Sound can penetrate lead (though it will be muffled), so it can be used easily. Touch can be used indirectly, where the PCs do something that causes something else to move and touch the trigger (or stop touching the trigger, as in a lead hinge that opens that contains the trap on the inside of the hinge).When you hide a trap behind lead, you must make sure that you maintain a line of effect from where the trap is hidden to where you want it to go off. In the case of a thin lead covering and damage spells, you can often blast right through through the lead covering. For instance, a fireball spell that goes off right where the trap is located can often blast through the lead and carry on to others in the room. Other techniquest to maintain line of effect involve using angles so that the trap can not be seen from where it is located, but a line of effect will go to where the center of the effect is located.I use these techniques to hide magical traps in higher level games. A rogue can still find them with a search skill, but walking around with detect magic does little or nothing to help the PCs out.</blockquote>

[QUOTE="jgsugden, post: 1419990, member: 2629"] Clever DMs can hide magic traps from detect magic. A thin sheet of lead can block detect magic, so if the trigger for the magical effect is blocked from view by a thin sheet of lead (or 1" of common metal, etc ...), then the magic will be hidden from the spell. How can this be used? It is best used with certain triggers: Sound, Touch and Timed are the best traptriggers for magic traps covered by lead. Sound can penetrate lead (though it will be muffled), so it can be used easily. Touch can be used indirectly, where the PCs do something that causes something else to move and touch the trigger (or stop touching the trigger, as in a lead hinge that opens that contains the trap on the inside of the hinge). When you hide a trap behind lead, you must make sure that you maintain a line of effect from where the trap is hidden to where you want it to go off. In the case of a thin lead covering and damage spells, you can often blast right through through the lead covering. For instance, a fireball spell that goes off right where the trap is located can often blast through the lead and carry on to others in the room. Other techniquest to maintain line of effect involve using angles so that the trap can not be seen from where it is located, but a line of effect will go to where the center of the effect is located. I use these techniques to hide magical traps in higher level games. A rogue can still find them with a search skill, but walking around with detect magic does little or nothing to help the PCs out. [/QUOTE]

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