Recommended

Recommended for Affliction from level 10 to 90 (chosen in the Affliction specialization). Pre-casts Haunt or Unstable Affliction, opens a fresh elite with Soulburn and Soul Swap, keeps Agony, Corruption and Unstable Affliction up (refreshing them early while Dark Soul: Misery is up), casts Haunt whenever it runs low and you have two shards (or in Dark Soul), channels Drain Soul for a shard when Haunt is ending and you have none, Drain Soul below 20%, otherwise Malefic Grasp (Shadow Bolt before 42). Seed of Corruption on three or more enemies (with Soulburn on six). Moving: instants and Fel Flame. Reminders: your pet, Dark Intent, Curse of the Elements in a group, Dark Soul, Doomguard or Infernal, Grimoire of Service or Sacrifice, Life Tap, defensives. Left to you: spreading DoTs to other targets and Soul Swap moves between them.

Adapted from Hekili (MoP fork): Affliction Warlock priority, wowtbc.gg: Affliction Warlock (MoP Classic), Icy Veins: Affliction Warlock leveling (MoP Classic).

In game: /rm set affliction chooses it by hand; it loads only for its edition and class, and is listed only for the specializations it is for.