Pielorinho
Iron Fist of Pelor
Lemme turn this back around on you, Tom: what do you think would be the result if, while you were sleeping, a rat crawled up on your chest and did its level best to open your jugular vein? My guess is, you'd die. Rats have sharp pointy teeth, and one with the intelligence of a druid could probably kill you in your sleep.
As an alternative, imagine a little fella about two feet tall wielding a twelve-inch spear. This guy is smaller compared to you than a human is compared to a fire giant. Imagine that you're asleep, and the little guy sneaks up and stabs you in the eye (or in the throat, or in the spinal cord) with his spear. Are you going to be getting up from that?
I think the rule is just fine. I think the PCs made some cunning plans in your game, and I think that you made a few questionable rules decisions (CdG as a surprise action, nobody noticing the sudden silence as the rogues pass by, the presence of a ring of silence in a group without a cleric, the ability of two silenced, invisible characters to synchronize their throatslitting, and the inability of the ogres & dire wolves to hear/smell the druid and wizard). But you didn't make any big gaffers of errors, really -- everything I described as questionable can be plausible explained away.
Every now and then, clever characters succeed in tasks far beyond what the rules suggest they should succeed at. Enjoy their creativity, and keep it in mind for future challenges.
Daniel
As an alternative, imagine a little fella about two feet tall wielding a twelve-inch spear. This guy is smaller compared to you than a human is compared to a fire giant. Imagine that you're asleep, and the little guy sneaks up and stabs you in the eye (or in the throat, or in the spinal cord) with his spear. Are you going to be getting up from that?
I think the rule is just fine. I think the PCs made some cunning plans in your game, and I think that you made a few questionable rules decisions (CdG as a surprise action, nobody noticing the sudden silence as the rogues pass by, the presence of a ring of silence in a group without a cleric, the ability of two silenced, invisible characters to synchronize their throatslitting, and the inability of the ogres & dire wolves to hear/smell the druid and wizard). But you didn't make any big gaffers of errors, really -- everything I described as questionable can be plausible explained away.
Every now and then, clever characters succeed in tasks far beyond what the rules suggest they should succeed at. Enjoy their creativity, and keep it in mind for future challenges.
Daniel