Hydrix dragon

Hydrix dragons are high-level Slayer monsters requiring level 101 Slayer to kill. They're part of the gemstone dragon group, and are the strongest dragon of this type.

Hydrix dragons are located under the Shilo Village mining site, and require the completion of the Hard Karamja Tasks in order to access them in the gem rock cavern underneath. In order to pass the barrier to confront them, players are also required to sacrifice a number of uncut dragonstone, uncut onyx, or uncut hydrix gems - with each gem type allowing the player to kill a certain (2, 400, 4000 kills per gem) number of dragons within their respective chamber; up to a limit of storing 60,000 kills at a time. If the player is on a Slayer task for hydrix dragons, however, they may enter the hydrix dragon area without the need for charges, and, if the player has already donated gems for charges, the charges will not be consumed while on-task. As hydrix dragons require 101 Slayer to kill, on release players will need to use a stat-boosting effect such as a wild pie or wilder pie in order to kill them.

Getting there
The cave is located inside the gem mine in the northern part of Shilo Village in Karamja.

To be able to enter the cave players must have completed the Hard Karamja Tasks. To access the mine players can teleport directly to the gem mine with the option in the Karamja gloves 3 or 4.

Strategy
Hydrix dragons have a special attack in which they send a row of spikes towards the area that the player is currently standing on. After a short delay, there is a 3 by 3 square area where spikes appear, dealing magic damage and draining adrenaline to 0, while also applying a debuff where adrenaline gained is reduced to half for a short duration.

Devotion in conjunction with Protect / Deflect Magic does block all damage done by the special attack, but it does not block the adrenaline loss nor does it prevent the debuff from occuring.

Main drops
Players will receive two drops from the main drop table each kill.