Excellent. I love the strangeness and true alienness of these creatures. I am like Manfred; I don't need to know more about these creatures in order to use them in the game - the PCs will interact rarely with them and are certainly unlikely to be able to find out more than what it is told here which is rich in its detail and sense of otherness.
I was thinking about how the PCs could interact with them and thought of the following:
1) Magic - always a copout but definitely a possibility in a high fantasy world. It should be extremely difficult if possible.
2) Perhaps the merfolk bring a trench-folk artefact to the PCs and ask them what it is. It will be utterly alien to anything they or any others have seen before.
3) My favourite. A ship carrying the vital McGuffin, essential to the saving of the world/continent/nation has sunk in a storm, falling into a deep ocean trench. The PCs, via the intermediary of the merfolk, must persuade the trench-folk to return the McGuffin to the surface. The merfolk have no reason to like either surface dwellers or trench-folk and will have to be persuaded to cooperate. They may try to seize the McGuffin for themselves.
In addition, the PCs will have to learn enough about the totally alien society and culture of the trench-folk (via the merfolk - Chinese whispers with much potential for misunderstanding) in order to negotiate with them and try to persuade them to give up the artefact. If the trench-folk learn of its powers would they not wish to keep it? What could surface dwellers possibly offer such a deep-dwelling race in trade? To complicate things still further, perhaps the sinking ship landed on part of a trench-folk city causing great destruction and many deaths; they see it as a hostile attach and will be most unwilling to believe it was an accident. Go to Comment
Really quite interesting. Possibly the safest way to use it would be to throw it as an improvised javelin. Probably wouldn't work against a creature (too hard to aim) but might be effective against a fae enchantment. Go to Comment
Photosynthesiser Mutant is able to photosynthesise, meaning it can generate its own food source as long as there is light. This would also mean that mutant was green, which would be fairly noticeable. It could be entirely green or just have green patches. Go to Comment
A wild species, vinus homophagus, more akin to sea-grape rather than the terrestrial variety, is not a monster despite its fanciful name. The grapes, a deep purple color when in bloom, and oozing dewdrops of perspiration, like the most prized and delectable of drinking wine grapes, do however deserve their moniker. Wine made from this fruit, is deadly to most humanoids, as is the raw berry, if plucked and eaten from the vine. It is the unnatural chemical concoction found within the fruit’s tart skin, which gives the man-eating grape its name. The chemical stew found inside each berry, functions as a necrotic agent, the same as found in some species of venomous snakes. The grapes literally eat the victim from the inside out, via cell death, dissolving organs and flesh in quick succession.
The tribes of Pra-Oohk Crater, from the jungles of Ghlush are known to sell the fermented “wine” of this grape to merchants of distant lands. Sadly, the taste of the concoction is divine when first quaffed, and even worse, the man-eating grape wine will never detect as poisonous via mundane means, its horrid natures somehow masking all attempts. Luckily the man-eating grapes are extremely rare, and endemic to humid jungles.