Affliction Warlock

Recommended Raiding Build

Single Target:

• Tier 1 Drain Soul
• Tier 2 Siphon Life
• Tier 3 Burning Rush
• Tier 4 Phantom Singularity 
• Tier 5 Mortal Coil
• Tier 6 Haunt
• Tier 7 Dark Soul: Misery

Cleave (Multi DoT):

• Tier 1 Drain Soul
• Tier 2 Absolute Corruption
• Tier 3 Burning Rush
• Tier 4 Vile Taint 
• Tier 5 Mortal Coil
• Tier 6 Dark Caller
• Tier 7 Dark Soul: Misery

Recommended Mythic+ Build

• Tier 1 Drain Soul
• Tier 2 Absolute Corruption
• Tier 3 Burning Rush
• Tier 4 Vile Taint 
• Tier 5 Mortal Coil
• Tier 6 Dark Caller
• Tier 7 Dark Soul: Misery

NightfallPassive

Inevitable DemisePassive

Drain SoulChanneled

Nightfall: Corruption damage has a chance to make the next Shadow Bolt instant and do 50% more damage. 

Inevitable Demise: Damage with Agony increases the damage of your drain soul by 15% stacking up to 50%. 

Drain Soul: Replace Shadow Bolt with a channel doing 100% more damage when the target is under 20% if a target dies while getting drained you gain a soulshard. 

Raiding: Drain Soul Strong for shard sniping and the execute damage. 

Mythic: Drain Soul Strong for shard sniping and the execute damage.

Writhe in AgonyPassive

Absolute CorruptionPassive

Siphon LifeInstant

Writhe in Agony: Agony stack up to 18 stacks and start with 4 stacks.

Absolute Corruption: Corruption will become permanent and deal 15% more damage 

Siphon Life: An additional DoT that will heal you for 30% of the damage it does. 

Raiding: Siphon Life works well with the new Malefic Rapture increased damage.

Mythic+: Absolute Corruption Good for DoT management when there are multiple targets.

Demon SkinPassive

Burning RushInstant

Dark PactInstant

Demon Skin: Soul Leech passively recharge 0.5% maximum health every 1 sec up to 15% of maximum health.

Burning Rush: Increase movement speed by 50% dealing 4% of maximum health every 1 sec.

Dark Pact: Sacrifice 20% max HP gaining 250% shield of sacrificed HP.

Demon Skin is strong when there is consistent ticking damage to help the healers. Burning Rush is very good when there is a lot of movement when you can't pre-plan it with Circle. Dark Pact is very good if there is a short high burst mechanic that you need to stack extra health/shield to survive. 

Raiding: Situational, all 3 are viable. 

Mythic: Situational, all 3 are viable.

Sow the SeedsPassive

Phantom SingularityInstant

Vile Taint1.5 sec cast

Sow the Seeds: Seed of corruption get 2 more seeds. 

Phantom Singularity: A strong AoE DoT that damages everything in a 15-yard radius healing you for 25% of damage dealt.

Vile Taint: Strong burst AoE DoT costs 1 shard to cast and slowing targets by 30%.

Phantom Singularity is the strongest for a single target and you want to line it up with your shard dumping for most damage output. 

Raiding: Phantom Singularity is a very strong tingle target to save up 5 shards to dump on Malefic Rapture.

Mythic+: Vile Taint is good for AoE burst.

DarkfuryPassive

Mortal CoilInstant

Howl of TerrorInstant

Darkfury: Reduces the cooldown of Shadowfury by 15 sec increasing radius by 2 yards.

Mortal Coil: Horrifies target for 3 sec and healing you for 20% max HP 45 sec cooldown.

Howl of Terror: Instant fear all targets within 10 yards for 20-sec breaks on damage taken.

Darkfury can be good if there are a lot of adds you need to stun or use it often. Mortal Coil is very strong just as a 20% heal every 45 seconds. Howl of Terror can be hard to find the right time to use due to fears breaking very fast.

Raiding: Mortal Coil Very strong 45-sec heal to help out the healers.

Mythic+: Mortal Coil Very strong 45-sec heal to help out the healer.

Dark CallerPassive

Haunt1.5 sec cast

Grimoire of SacrificeInstant

Dark Caller: Reduce cooldown by Darkglare with 60 sec.

Haunt: Does small damage on impact and increased damage dealt to the target by 10%.

Grimoire of Sacrifice: Sacrifice your pet to gain a chance on hit to do splash damage. 

Dark Caller can be good if you need to line all your cooldowns up with each other for the 2 min burst. Haunt is the best in most situations for the extra 10% damage to your priority target. 

Raid: Haunt Strong increase to single/Prio targets.

Mythic+: Dark Caller In M+ it's hard to find a use for haunt so being able to line all your cooldowns up all the time will be strong.

Soul ConduitPassive

Creeping DeathPassive

Dark Soul: MiseryInstant

Soul Conduit: 15% chance to refund a shard.

Creeping Death: Your DoTs tick 15% faster.

Dark Soul: Misery: Increase your haste by 30% for 20 sec.

Raiding: Dark Soul: Misery

Mythic+: Dark Soul: Misery