Waterfiend

Waterfiends are the elemental cousins of the Pyrefiend and the Icefiend, and may be assigned as a slayer task by Duradel/Lapalok and Kuradal. They are found in the Ancient Caverns which can be accessed by completing Barbarian Training to the pyre ship stage. They may be the least harmful monster in the caverns, but they are no pushovers. Waterfiends attack with both magic and magical ranged attacks, both of which hit reasonably often, and can damage up to 119. The waterfiends ranged and magic attack has a very short attack range; only four squares. Waterfiends are also found in the Chaos Tunnels and within the Ghorrock Fortress during The Temple at Senntisten.

Waterfiends have a very high charm drop rate, especially for crimson charms (around 75%). For this reason, they are targeted by many players who wish to level up summoning quickly.

Waterfiends have extremely high defence against slashing and piercing attacks. They are weaker against crush attacks, but even then, their defence is good. They are immune to poison.

Strategy
When fighting waterfiends, you want to have a high magical defence such as karil's equipement or black dragon hide. Armadyl is not recommended as it lowers your melee offensive stats. The best armor you could wear would be Ganodermic. Deflect/Protect from Range is recommended as this is their highest offensive attack.

If you are using a chaotic maul it is recommended you use full void melee gear as this will increase the maul's accuracy so you can hit high more frequently. If you can you also want to bring a Unicorn Stallion/Bunyip Familiar. The bunyip is very effective here with the swallow whole scrolls as the waterfiends drop lots of unnoted raw lobsters and raw sharks which can be used with the scroll to heal yourself.

Locations
Waterfiends can be found in:
 * The Ancient Caverns
 * Chaos Tunnels
 * Ghorrock fortress

100% drop

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Runes

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Seeds

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Weapons and armour

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Herbs

 * Always dropped in pairs, with a chance of getting the same herb twice.


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Gems, ores and bars

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Other drops
This item can only be obtained as a drop at Ghorrock.
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Trivia

 * Waterfiends had an unannounced graphical update on 5 June 2008 - with this, some of their drops changed. Then, later that day, a system update after Smoking Kills was updated to remove the drop change, only to be changed once again to fix some bugs and change some of the drops that were mentioned on the forums.
 * Due to it being a form of water, it is weak to Crush attacks instead of more commonly used melee weapons. This is because stabbing and slashing weapons are generally thin or pointy, and subsequently don't cause as much impact against water as something that is either heavier or has a broader surface area, such as a maul. Same basic principles as throwing a rock into a river to make a splash versus throwing a stick in.
 * Waterfiends have a different examine text compared to their elemental cousins, the Pyrefiends and Icefiends.
 * The waterfiend's magical attack uses particle effects.
 * Most of the Waterfiend's drops are the colour of blue (Mithril bar, Mithril arrows, Rune med helm).
 * Because they are made of water, the poison immunity may be explained by that, that they can purify themselves from the poison by having running water flowing in their body.

Waterfiend Waterfiend