Improved Drain Soul

From WoWWiki

Improved Drain Soul
Returns X% of your maximum mana if the target is killed by you while you drain its soul. In addition, your Affliction spells generate X% less threat.
Usable by
Class	Warlock
Properties
Location	Affliction, Tier 2
Affects	Drain Soul
Ranks	5
Requirements
Points required	5

Improved Drain Soul is a warlock talent that improves mana efficiency and reduces threat generated by affliction spells.

With mastery of the dark powers wielded by Warlocks, the souls of others become little more than a plaything. In fact, some are likely to gorge themselves on the life energies of others in obscene ways while they forge the Soul Shards used in their various rituals and magics.

Rank table

Rank	Mana Return	Threat Reduction
1	7%	5%
2	15%	10%

Notes

In order for this talent's mana return to activate, the warlock or its minion must land the killing blow, which can be tricky in groups.

The threat reduction of the talent makes it attractive for group and solo play.

Destruction warlocks should consider getting this talent if they are to be doing any PVE, it is a vital tool for mana regeneration which they otherwise lack compared to the other specs.

The trick to get the mana as a Shadowbolt or Incinerate spammer:

To best achieve the mana return when spamming DDs, ensure there is enough range between the warlock and the target so that Drain Soul can be cast whilst the DD is reaching it. This is easy on caster and ranged mobs. For melee mobs, let the Voidwalker or Felguard keep it at the distance. Reduce the mobs health such that it is one shot from death. Send in the executing shot and follow immediately with a Drain Soul. The DD flies slowly, and the Drain Soul connects instantly, before the DD lands and kills the mob.

If you have problems with too many Soul Shards, addons like Necrosis have support for automatic deletion.

Changes

Patch 2.1.0 (5/22/07): This talent will no longer trigger when a creature other than the one you are draining dies.
Patch 2.1.0 (5/22/07): Abilities and items that are triggered when you kill a target are also now triggered when your pet kills a target.

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