Let me quote myself from above:While I'm not going to take a side in this discussion overall...
Anyway, considering that CK doesn't affect those immune to poison, I'd wager none of the other spell that produce poison get around plain vanilla "immunity to poison."
Now that that's out of the way....
I would like to clarify one point....
As a matter of fact, it is important to include that line, because of the change in the way diseases worked from 2e to 3e. What are considered to be "magical diseases" in 3.0 were considered to be "curses" in 2e. ***
The 3e paladin entry for divine health, then, specifically mentions those magical diseases so that players and DMs realize that paladins are now immune to them when previously they were not...
Very plausible explanation. Unfortunately, if it's accurate, it only clouds the issue. Let's look:
In previous versions, a Druid was only immune to "natural" poisons. This list was more restrictive than the Paladin immunity. Now you're saying that when they intended to expand the Paladin immunity, they made sure to include supernatural and magical diseases?
Well, its stands to reason that WotC should have done the same for Druids, doesn't it? In fact, it would be even more necessary to clarify for Druids because there are no supernatural or magical poisons on any list of poisons. I''m even betting that nearly all, if not all, the poisonous attacks by creatures in the MM's are Extraordinary (non-magical) abilities (Black Dragons in Dragon Magic can convert spells to poison attacks, being one notable exception). So for the very reason you claim WotC clarified Paladins, WotC had cause to clarify Druids to include poison spells...if we call that magic poison. But they didn't.
I'm going to repeat myself again, for all those who don't have the maturity to ignore a thread if they think the matter is decided:
Anyway, considering that CK doesn't affect those immune to poison, I'd wager none of the other spell that produce poison get around plain vanilla "immunity to poison."