Haste

This one: Increases your attack speed by 1%. · on no item.

• Haste · spell 65 · Nature · Increases your attack speed by 2% for 30 sec. · on the item Swiftfeather Token
• Haste · spell 13494 · Increases your attack speed by 50% for 30 sec. · on no item
• Haste · spell 13533 · Increases your attack speed by 15% for 10 sec. · on no item
• Haste · spell 14824 · Increases ranged attack speed by 10%. · on 5 items
• Haste · spell 14825 · Increases ranged attack speed by 11%. · on the item Bandolier of the Night Watch
• Haste · spell 14826 · Increases ranged attack speed by 12%. · on the item Heavy Leather Ammo Pouch
• Haste · spell 14827 · Increases ranged attack speed by 13%. · on the item Thick Leather Ammo Pouch
• Haste · spell 14828 · Increases ranged attack speed by 14%. · on no item
• Haste · spell 14829 · Increases ranged attack speed by 15%. · on the item Gnoll Skin Bandolier
• Haste · spell 21165 · Increases your attack speed by 20% for 10 sec. · on no item
• Haste · spell 28701 · Increases your attack speed by 15% for 20 sec. · on no item
• Haste · spell 29413 · Increases ranged attack speed by 13%. · on 2 items

First 12 of 21; the spell search lists them all.

Values as each build had them, not tested in play.

1. Forever 1.60.1.69913vs Era 1.15.9.69722
   Description, Era 1.15.9.69722

   Increases your attack speed by 2%.

   Description, Forever 1.60.1.69913

   Increases your attack speed by 1%.