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<blockquote data-quote="Philotomy Jurament" data-source="post: 4523868" data-attributes="member: 20854">A Thief sneaking up on the guard would roll Move Silently*.&nbsp; If he succeeds, he's not making any noise that the guard can hear.&nbsp; I would give the Thief a bonus (perhaps a large bonus, depending on the situation) to surprise: he'd have at least a 3:6 chance to surprise, and maybe 4:6 or more if he's out of the guard's line-of-sight and the guard doesn't usually look behind him, or is distracted, or whatever.For a BTB reference, look at pg 102 of the Players Handbook.&nbsp; Under &quot;SILENT MOVEMENT,&quot; the PH say that a Thief moving silently (or someone magically silent) has &quot;...an improved chance to surprise an opponent or slip past it.&quot;&nbsp; Additionally, under &quot;SURPRISE,&quot; the PH says &quot;Surprise is usually expressed as a 2 in 6 chance for all parties concerned...assume a party of characters, moving silently and invisibly, comes upon a monster.&nbsp; They have a 4 of 6 chance to surprise...&quot;&nbsp; That suggests that silence adds 1:6 in a typical situation, and invisibility adds another 1:6.&nbsp; Again, that is in a typical situation.&nbsp; You might grant a higher modification depending on the exact situation.* - note that if the Thief fails his Move Silently roll, that doesn't mean the guard instantly is aware of him.&nbsp; It just means that he's not completely silent, and it's possible (and more likely) that the guard notices him.&nbsp; You can assume a Thief who fails to Move Silently is still moving quietly, but without perfect stealth (i.e. much like a non-Thief trying to sneak around).&nbsp; In this case, you'd still roll for surprise, but wouldn't give the Thief any special benefit (e.g. no additional 1:6 bonus for silent movement).</blockquote>

[QUOTE="Philotomy Jurament, post: 4523868, member: 20854"] A Thief sneaking up on the guard would roll Move Silently*. If he succeeds, he's not making any noise that the guard can hear. I would give the Thief a bonus (perhaps a large bonus, depending on the situation) to surprise: he'd have at least a 3:6 chance to surprise, and maybe 4:6 or more if he's out of the guard's line-of-sight and the guard doesn't usually look behind him, or is distracted, or whatever. For a BTB reference, look at pg 102 of the Players Handbook. Under "SILENT MOVEMENT," the PH say that a Thief moving silently (or someone magically silent) has "...an improved chance to [i]surprise[/i] an opponent or slip past it." Additionally, under "SURPRISE," the PH says "Surprise is usually expressed as a 2 in 6 chance for all parties concerned...assume a party of characters, moving silently and invisibly, comes upon a monster. They have a 4 of 6 chance to surprise..." That suggests that silence adds 1:6 in a typical situation, and invisibility adds another 1:6. Again, that is in a typical situation. You might grant a higher modification depending on the exact situation. * - note that if the Thief [i]fails[/i] his Move Silently roll, that doesn't mean the guard instantly is aware of him. It just means that he's not completely silent, and it's [i]possible[/i] (and more likely) that the guard notices him. You can assume a Thief who fails to Move Silently is still moving [i]quietly[/i], but without perfect stealth (i.e. much like a non-Thief trying to sneak around). In this case, you'd still roll for surprise, but wouldn't give the Thief any special benefit (e.g. no additional 1:6 bonus for silent movement). [/QUOTE]

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