||The subject of this article was removed from World of Warcraft in patch 4.0.1.
- 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.
Improved Thunder Clap reduces the Rage cost of the Thunder Clap ability, increases the damage, and improves the attack speed Debuff.
| Rank || Rage cost|
| Damage increase || Slow increase
| 1 || 1 Rage || 10% || 4%
| 2 || 2 Rage || 20% || 7%
| 3 || 4 Rage || 30% || 10%
A fully improved Thunder Clap has a Rage cost of 16 and slows the attack speed by 20%. Damage is dependant on attack power.
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