Hussar
Legend
Getting hit three times succesfully is not a forgone concusion, particularly with a low hp creature like a snake. And even though 1E and 3E do let you go down to -10 for death (for 2E death is at 0 HP), you do start to die at -1 hp (so that probability also needs to be factored in). A 10 hp character has a pretty good chance of being knocked down to -1 hp after three succesful hits. Against a snake, a full party will most likely take it out before it has a chance for even a second attack (assumingit wins initiative).
Also, i am not disputing that SoD significantly raises the chance of death. That is what it is supposed to do. That is why I like it. I am just questioning the claim you made that it means one character dies nearly 100% of the time it is introduced (this will vary considerably dopending on party level, the characters and the encounter itself----in 2E, a 1st level priest has a death save of 10, but at 20th he has a 2). Also, as the party increases in level, their number of resources to del with such threats (particularly poison and petrification) go up considerably.
No, of course it's not a foregone conclusion. Failing your saving throw isn't either. However, you're also presuming a single snake vs an entire party. This being AD&D, normal snakes appear in groups of 1-6.
But, that's the point - it's rocket tag. Either we kill the snake before it gets a chance to make some hits, or we almost guarantee a fatality. Whereas with a normal monster, given the EXACT same setup, the chances of fatality are far, far less.
Put it another way. Single hit is still about 50:50 PC death. Single hit with a d8 weapon cannot even drop the PC into the negatives. How's that for being overpowered? Your PC's best chances of survival are 50:50.
It's interesting though, that you bring up 2nd Edition D&D, in regards to poison. Here's what the 2e PHB says about Poison:
2e D&D PHB page 140 said:The strength of different poisons varies wildly and is frequently overestimated. The bite of the greatly feared black widow spider kills a victim in the United States only once every other year. Only about 2% of rattlesnake bites prove fatal.
At the other extreme, there are natural poisons of intense lethality. Fortunately, such poisons tend to be exotic and rare...
Yet, according to the rules, any poisonous snake that bites a PC has about a 50/50 chance of instantly killing that PC. The text doesn't match the rules. Sure, while the priest might have a bit better chance of shrugging off poison, everyone else is worse than 50:50 until 9th (for fighters - everyone else is worse until well into double digit levels), so, in most parties, almost everyone has worse than a 50:50 chance of dying from any poison effect.
So, spread it out over time then if you don't like it in a single encounter. Hit by three poison effects between 1st and 5th level and you're almost guaranteed (about 90%) of dying. And you don't get neutralize poison until 7th.
Oh, and against the medusa, no one gets better than 50:50 until the fighter at 9th level. So, again, party of 4 PC's faces a medusa and the chance of PC fatality is very, very close to 100%.
See, this is why I don't buy the "oh, it's all a matter of personal preference" argument. The math just doesn't work. It doesn't do what proponents want it to do - ie. make combat more random - all it does is yank the chance of PC death way too high.
You'd get exactly the same effect by tripling the damage output of any monster.