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Abyssal Trench
Sunless Rift
The Gulper draws prey to the lure, the Skulk snaps from silt, and the Dart rams the swim line.
Abyssal Trench drops into sunless ocean rifts where volcanic chimneys vent black water into freezing depths. Pressure cracks diving hulls, and no natural light pierces the thermal plume. The silence is broken only by the click of tooth plates and the hum of glowing lure stalks.
Three bathypelagic predators hunt the thermal rim. The Abyssal Gulper dominates the open water, trailing a lantern bulb that lures swimmers into a wall of needle teeth. Buried in bottom silt, the Lantern Skulk wiggles a pale fleshy lure, waiting for divers to investigate. Darting through the black currents, the Viper Dart spears across open channels, ramming oxygen gear and puncturing suits.
The pack hunts by dazzling senses in pitch black water before swallowing divers whole. The Viper Dart rushes first, cutting through swim lines and scattering divers into the freezing void. The Lantern Skulk pulses its lure from the silt, drawing disoriented divers toward buried jaws.
When the group loses formation, the Abyssal Gulper rises from the floor. Its golden lure flashes blinding pulses, freezing swimmers in place while its cavernous jaw drops open. The fish do not pursue quarry into shallow water. They hold the black trench and let the freezing pressure finish the job.
The trio uses blinding light and suction currents to overwhelm swimmers. When the Lantern Skulk pulses Hypnotic Bite to leave a diver Vulnerable, the Viper Dart strikes with advantage, using Puncture Rush to inflict Stress.
If a diver attempts to swim upward, the Abyssal Gulper spends Fear on Trench Inflow. That suction vortex drags swimmers directly into the Gulper's jaws.
When the Gulper triggers Lure Flash, nearby targets are blinded, giving the Viper Dart clear runs through defenseless divers.
Example encounter
1. Put the Lantern Skulk buried in silt, the Viper Dart in open black water, and the Abyssal Gulper on the vent rim.
2. On the Dart's first spotlight, use Puncture Rush from Far into Melee and force an Agility Reaction Roll (15) to knock the target prone and Vulnerable.
3. Spotlight the Lantern Skulk from Hidden with Hypnotic Bite so a Vulnerable target marks 1 Stress and stays Vulnerable.
4. Use Trench Ambush so Skulk attacks against Vulnerable targets have advantage and deal +1d8 physical.
5. Mark a Stress on the Gulper for Lure Flash. Targets within Close make a Presence Reaction Roll (15) or mark 1 Stress and become Vulnerable.
6. Spend a Fear on Trench Inflow. Targets within Close make a Strength Reaction Roll (15) or take 3d8+2 physical and are pulled into the jaws.
7. If a PC tries to swim away from Far, spend a Fear on Bioluminescent Snare and call an Instinct Reaction Roll (15) or they halt, Vulnerable.
