An unidentified Warlock is an assassin. Like her cohorts, she displays the blue-stained lips of those who drink Shade of the evening.
This unidentified warlock appears as a young girl and entices Daenerys to play while in Astapor. The ball she rolls to Dany actually contains a manticore. Before the manticore can strike, Ser Barristan Selmy stabs it in the back with a dagger and kills the creature. The assassin runs and jumps off the dock - only to then magically appear in the distance. The warlock escapes uninjured.
The Warlock is a skilled shapeshifter, as shown when they took on the physical form of a young girl to entice and trick Daenerys Targaryen in Astapor bay.
The Warlock has the ability to teleport between distances, as shown when they were able to disappear by jumping off the dock and reappear in the distance.
Like all the other Warlocks of Quarth, the Warlock is presumably a skilled alchemist, as they reguarly drank the shade of the evening, which gave them blue lips.
|Season Three appearances|
|Valar Dohaeris||Dark Wings, Dark Words||Walk of Punishment||And Now His Watch Is Ended||Kissed by Fire|
|The Climb||The Bear and the Maiden Fair||Second Sons||The Rains of Castamere||Mhysa|
In the books
In the A Song of Ice and Fire novels, Daenerys is the target of an assassination attempt (the second of three) before abandoning Qarth, and is saved by Barristan Selmy, though he is under the assumed identity of "Arstan Whitebeard" at the time. In the books, this occurred on the docks of Qarth as she was leaving, but the TV series moved it forward slightly to occur in Astapor, soon after Daenerys arrives from Qarth.
In the books, the would-be assassin is not a Warlock but a Sorrowful Man, an ancient guild of assassins in Qarth known for whispering "I am so sorry" to their victims before killing them. It is not known who orders the attempt on Daenerys's life, as several Qartheen factions have called for her death by this time in the narrative, though the Warlocks have a special interest in Daenerys's death after her dragons kill their leaders, the Undying Ones, when she tries to leave from the House of the Undying.