|Release date||21 November 2006 (Update)|
|Level||45 / 95 (And 90 Agility)|
|Experience||54 / 650 (and 125 Agility)|
|Location||Feldip Hunter Area|
|Loot||Black warlock (item)|
|Examine||A black warlock. The air seems to distort wherever it passes.|
The Black warlock is a butterfly that players can capture with the Hunter skill at level 45 or above. Players can find Black warlocks at the Feldip Hunter area. They must wield a butterfly net or a magic butterfly net and have at least one butterfly jar (1 butterfly jar for each butterfly) in their inventory to catch them. All of these items are available for purchase in hunter stores, for example the shop in Yanille.
Black warlocks and other butterflies can also be caught using a morphic or volatile Sacred clay butterfly net. Morphic butterfly nets give double the original experience, and Volatile butterfly nets give 2.2 times. The Morphic and Volatile tools can be obtained as rewards from the minigame Stealing Creation.
After catching a Black warlock, players can either release them (via a right-click option) or use them on another player to boost their Strength by 20%. (the player you will use it on will need to have accept aid on)
An efficient method for capturing them effectively is to locate a spawn and stay by it. The butterflies respawn every 3 to 4 seconds, so by not moving a player can repeatedly capture and release the butterflies. There are spawns all over the Feldip Hunter area.
At level 95 Hunter and 90 Agility, the player can catch black warlocks bare handed. Doing this gives the player 650 Hunter experience and 125 Agility experience. Following an update, the player's hands no longer have to be empty, as a result, it is recommended to wield the Enhanced Yaktwee Stick to increase experience gain. The player will follow it until it is caught. Following an update on the 13 September 2013 catching a butterfly bare-handed gives a chance of obtaining a Crystal triskelion fragment. After the butterfly has been caught the player will release it, meaning that the butterfly cannot be kept.
- Previously, when trying to catch them without the proper equipment or level, the message was cut off in the middle of the word "agility".