Soulshatter

From WoWWiki

Soulshatter
Soulshatter Instant cast Self range 8% of BASE Health Reduces threat by 50% for all enemies within 50 yards.
Usable by
Class	Warlock
Properties
Type	Utility
School	Shadow
Cooldown	5 Min
Other information
Ranks	1
Requirements	Requires 1 Soul Shard

Soulshatter is a spell which reduces aggro on all targets within 50 yards by 50%.

Rank	Health Cost	Level	Cost
1	8%	66	4 59

Notes

This spell requires 8% of the warlock's base health. If the 8% base-health requirement is not met, the spell can not be cast.

Soulshatter can be resisted. After 3.0.1 Soulshatter cant be resisted (we still need bluepost about it).

Tips and tactics

Soulshatter is best used in conjunction with a party or raid running KLHThreatMeter (a.k.a., KTM) or Omen. This way, the warlock can raise their aggro to just over the main tank's, then use Soulshatter to drastically lower it.