Improved Shadow Bolt
Reduces the cast time of Shadow Bolt by 15% and increases its damage by 40%.
Tree position
In the Affliction Warlock talent tree, Improved Shadow Bolt sits in the Affliction specialization talents, row 4 of 11. It is a single-point node.
Choice node
Improved Shadow Bolt shares its node with Drain Soul. A character takes one of the two.
Drain SoulDrains the target's soul, causing (556.9% of Spell Power) Shadow damage over 5 sec. Damage is increased by 100% against enemies below 20% health. Generates 1 Soul Shard if the target dies during this effect.
Connected above
The tree draws a line into Improved Shadow Bolt from Nightfall.
NightfallWither damage has a chance to cause your next Drain Soul or Malefic Grasp to deal 25% increased damage. Drain Soul and Malefic Grasp channel 50% faster while affected.
Connected below
Improved Shadow Bolt leads on to Cunning Cruelty and Withering Bolt.
Cunning CrueltyShadow Bolt and Drain Soul have a chance to trigger a Shadow Bolt Volley, dealing Shadow damage to 5 enemies of your current target.
Withering Bolt2 ranksShadow Bolt and Drain Soul deal 5% increased damage, up to 15%, per damage over time effect you have active on the target.
Same row
Also on this row: Improved Haunt and Absolute Corruption or Siphon Life.

Absolute CorruptionWither is now permanent and deals 15% increased damage. Duration reduced to 24 sec against players.
Siphon LifeWither deals 30% increased damage and its periodic damage heals you for 5% of the damage dealt.
Talent trees
Improved Shadow Bolt is in the talent tree of 3 specializations. Warlock: Affliction (DPS), Demonology (DPS), Destruction (DPS).
Improved Shadow Bolt Changes by patch
Tracked changes to this talent between game data builds, newest first.
- First tracked in the game data (patch 12.1.0)