spiral rune
Size: Slightly smaller than a hammerhead
Domain: Abyss
Aggro: Will not be hunted/pursued by other predators, when there are 3 of them.
Health: ~3000 each
Unlike other abyssal horrors that attack the submarine to get at the meaty humans inside, a Coven is more inclined to cause chaos internally, among the crew and systems, before digging in. They circle around the submarine, and their small size, speed, and black skin make them very good at hiding from the gaze of periscopes.
While they are hovering about, and there's 3 of them, they will gradually exert some form of mental pressure on an area, centered on a random crew member, called a Curse. Humans with Mindsense active are more likely to be targeted, while clowns are less likely to be targeted (and may have some resistance).
Curse
Without much warning, the crewmember will rapidly gain a large amount of psychosis, along with some random other negative effects (hallucinating, slow, drunk, alcohol sensitivity, blindness, radiation sickness, paralysis, and others). At the same time, electrical & mechanical devices & systems in a radius around them will instantly break down, and need to be fixed. Nearby plants may produce mutated fruit, and quickly explode, fires can break out. The hit of a curse may only last 1-2 seconds, but the after effects will remain.
Feeding
After a bit, the coven will target another crewmember, and curse them, all the same. After 3-4 curses, they will dive in, and start tearing at the hull, and eventually start snapping at the crew.
In direct contact, they can inflict husk a large amount of husk with a single bite. Theoretically, the Cronefish are hosts to the parasite, but retain some form of control over it, with their psychic abilities. If they take enough damage, they may retreat by burrowing out of the hull, and return to the cursing method.
foggy mist
urban swan