This includes items and quests that can no longer be obtained.
The in-game information in this article is kept purely for historical purposes and should probably not be under any other categories.
Subtlety
Reduces the threat generated by your restoration spells by X% and reduces the chance your helpful spells, Moonfire and Insect Swarm will be dispelled by Y%.
Reduces the threat generated by your restoration spells by X% and reduces the chance your helpful spells, Moonfire and Insect Swarm will be dispelled by Y%.
The reduced threat is only useful in PvE combat. The dispel resistance is, with a few exceptions, mainly useful in PvP combat.
This talent is popular 'filler' for high level Restoration druids, as you have two points to spare after taking Natural Shapeshifter (which is a prerequisite for Master Shapeshifter) and the Naturalist talent doesn't improve your healing if you never cast Healing Touch.
Patch 3.0.2 (2008-10-14): Now a 3-point talent, down from a 5-point talent. Also moved to Tier 2, up from Tier 3. Also now only reduces threat for Restoration spells, and reduces the chance that your healing over time spells (Lifebloom, Regrowth and Rejuvenation) will be dispelled, rather than all Druid spells. Threat management for Balance can now be found in the Balance tree, within Nature's Reach.
Edit
Patch 3.0.2 (2008-10-14): Now a 3-point talent, down from a 5-point talent. Also moved to Tier 2, up from Tier 3. Also now only reduces threat for Restoration spells, and reduces the chance that your healing over time spells (Lifebloom, Regrowth and Rejuvenation) will be dispelled, rather than all Druid spells. Threat management for Balance can now be found in the Balance tree, within Nature's Reach. 
