Emberstorm

From WoWWiki

Emberstorm
Increases the damage done by your Fire based spells by X%. Reduces the cast time of your Incinerate spell by Y%
Usable by
Class	Warlock
Properties
Location	Destruction, Tier 6
Affects	Immolate, Searing Pain, Soul Fire, Incinerate, Conflagrate, Rain of Fire, Hellfire
Ranks	5
Requirements
Points required	25

Emberstorm is a Warlock talent in the Destruction tree which increases all fire damage dealt by direct damage and DoT spells as well as decreasing the cast time of Incinerate.

Rank table

Rank	% Fire Damage Increase	% Reduction In Incinerate Cast Time
1	2	2
2	4	4
3	6	6
4	8	8
5	10	10

Notes

Greatly improves the damage output of any fire destruction warlock and vital for any fire build. It is being debated whether Shadow Bolt or Immolate and Incinerate provide a better DPS - Shadow Bolt vs Incinerate

Past changes

Patch 2.4.0 (3/25/08): "... now also reduces the cast time of your Incinerate spell by 2/4/6/8/10%."