Official notes
Official wiki for this creature. Official news wins.
You already know the room. The creature is the constant. You are the variable.
Ancient Cavern. Not a green-dragon task.
Slayer · Old School RuneScape
Where
Ancient Cavern
Assigned by Old School slayer masters (Chaeldar through Duradel, and Konar). The live page lists who.
Hunt
Ancient Cavern. Not a green-dragon task — they sit outside the wild. Antifire. Barbarian training is the door.
Watch
Task-only doors, face covers, and cannon-blocks are on the live page. Confirm on the wiki.
Kill
A kill ends when brutal green dragon drops. Walk the room if you pulled extras. Reset at the door when the task is done. Wrong prayer or the wrong tile is the wipe. That is the whole file. Do not treat a slayer floor as a raid invocation. Counts, drops, and the living method: the Old School wiki for this hour.