Money making guide/Opening sinister chests

The sinister chest, located in the Yanille Agility dungeon, always rewards nine noted herbs when opened: three grimy ranarr weed, two grimy harralander, and one each of grimy torstol, grimy irit leaf, grimy avantoe and grimy kwuarm. Opening the chest requires a sinister key, and the key is used up when the chest is opened. Depending on the price difference between the keys and the herbs, it can be very profitable to buy sinister keys, open the chest, and sell the resulting herbs. The price of sinister keys jumps around a lot, but it's not uncommon to buy them instantly for far below the market price.

Start out by teleporting to Yanille by whatever method you have, and go to the Yanille Agility Dungeon entrance. Slash the web, go down the stairs, and across the Agility ledge. Enter the obstacle pipe immediately next to you and open the chest at the end of the room. You will be poisoned. Open the chest 2-3 times (it takes about 6.4 seconds each). When you've used all of your keys, teleport back to Yanille, bank the herbs and repeat. Each trip takes approximately three minutes.

Set a metronome to a BPM of 9.375 to obtain close-to-optimal chest open timings, without having to spam-click.

---

Check the live price and daily volume of items on the Grand Exchange before making large investments in any method.
All prices on this page are cached, meaning they may be out of date.
To force a new cache of this page, click this link.
If a money making method is out of date, you can edit it or leave a message on the talk page.