Waterfiends can be found in the Ancient Cavern underneath the Baxtorian Falls, Kraken Cove and Iorwerth Dungeon. They are moderately resistant to all forms of combat with the exception of crush attacks, which they are significantly more vulnerable against. They use a magic attack whose projectile resembles Water Blast, along with a magical ranged attack resembling ice arrows.
Duradel and Konar are the only Slayer masters who assign waterfiends, and are a rare assignment. To unlock waterfiends as a task, players must have entered the Ancient Cavern at least once.
Killing a waterfiend is a requirement for an elite clue scroll.
The simplest way to reach waterfiends is by accessing the Ancient Cavern, found south of the Barbarian Outpost. A games necklace allows for easy trips to the bank.
Because waterfiends use both magic and ranged, circumventing all of their damage through protection prayers is not possible. However, both of their attacks are rolled against the player's total magic resistance. Therefore, only armour to provide magic defence bonus, such as dragonhide or Karil's armour, is helpful when fighting waterfiends.
Using crush attacks is ideal for dealing damage. If a crush weapon is not available, some high level weapons, such as the Saradomin sword and the leaf-bladed battleaxe, possess a secondary crush attack which is sufficient given the very low crush defence bonus of waterfiends.
Alternatively, ranged is also effective as most magic-resistant armour also provides a substantial ranged attack bonus. Once waterfiends lose their aggression, they can be trapped and safespotted in some locations within the Ancient Cavern. The crystal bow, which has an extraordinarily long attack distance, can be used to safespot waterfiends over larger bodies of water.
Using Protect from Missiles is recommended for those struggling to defend against waterfiends. Players should also consider including Mystic Might in their quick-prayers for the added magic bonus.
Many of the waterfiends' drops are ideal for casting High Level Alchemy on.
This monsters drops seeds from the allotment seed drop table.
|Staff of water||1||Common||1,746||900|
|Rune med helm||1||Uncommon||11,131||11,520|
|Mystic water staff||1||Uncommon||25,249||25,500|
|Blue d'hide vamb||1||Rare||1,427||1,800|
|Rune full helm||1||Rare||20,645||21,120|
|Mithril ore||1–20 (noted)||Common||120-2,400||97-1,940|
|Mithril bar||2–15 (noted)||Uncommon||1,244-9,330||360-2,700|
|Uncut sapphire||1–4 (noted)||Uncommon||545-2,180||15-60|
|Uncut emerald||1–3 (noted)||Uncommon||734-2,202||30-90|
|Uncut ruby||3 (noted)||Uncommon||4,161||180|
|Uncut diamond||1–3 (noted)||Rare||2,858-8,574||120-360|
|Raw lobster||4–18 (noted)||Uncommon||520-2,340||168-756|
|Raw shark||3–8 (noted)||Uncommon||1,881-5,016||306-816|
Rare drop table
In addition to the drops above, this monster also has access to the rare drop table.
|Loop half of key||1||Common||9,826||60|
|Tooth half of key||1||Common||9,727||60|
|Rune 2h sword||1||Uncommon||37,834||38,400|
|Rune sq shield||1||Uncommon||22,503||23,040|
|Silver ore||100 (noted)||Uncommon||5,800||4,500|
|Dragon med helm||1||Rare||59,077||60,000|
|Shield left half||1||Rare||65,229||66,000|