Chaeldar

Chaeldar (pronounced Ki-ell-dar) is the fourth most-advanced slayer master in RuneScape. She is found in the throne room of Zanaris, directly south of the entrance from the Lumbridge Swamp. She gives out mid to high level Slayer tasks which may only be attempted by players with a combat level of at least 70.

Fairy rings
The Fairy ring network is a useful method of doing Chaeldar's Slayer tasks. It has teleport spots close to the Slayer Tower (CKS), the Fremennik Slayer Dungeon, (AJR), and other locations to be reached easily for no cost to the player - all of which contain the slayer monsters that she assigns. However, you need to have reached a certain point in or completed the quest Fairytale II - Cure a Queen.

                                 *List of monsters she assigns :

She also assigns dust devils ( 65 slay required ), but I don't understand the editing.

She also assigns Blue Dragons