So let's get a bit froggy today & start thinking about 'the enemies of mankind' for a moment again with some inspired Empire of the Petal Throne madness. We did a bit on this back in the middle of September here on the blog. Thanks to Wayne's Books I was doing more of EPT rpg back reference. But let's bring this back to the Starship Warden again.
An encounter with some throw back Slann is definitely a high end encounter especially aboard the Warden! This style of encounter would possibly be a sacrifice raid & or a slavery run. And this is a very common style of encounter for mutant PC's. Now an advanced adventure option might be Goodman Games 'The Captain's Table'.
This is especially true of those players who have read every Metamorphosis Alpha rpg article or 'The Captain's Table' adventure. All that's needed is a swamp like encounter area add in Aztec inspired temples. The if PC's run afoul of these foggy bastards then they may be in for more of a nightmare inspired by the other demon goes lurking beyond the threshold. And these froggy cultists might be responsible for the Frogmouth in Gary Gygax's S3 'The Expedition to the Barrier Peaks' module.