• Flare of the Heavens
• Item Level 239Disenchants into:
  [Abyss Crystal]: 1-2
• Binds when picked up
• Unique
• Trinket
• Requires Level 80
• Equip: Improves critical strike rating by 120.
  Equip: Your harmful spells have a chance to increase your spell power by 850 for 10 sec.
• Sell Price: 11 39 40

Source

This item drops from General Vezax on hard mode in the 25-man version of Ulduar.

Patch changes

• Patch 3.1.0 (14-Apr-2009): Added. 
  

Notes

• This has a proc chance of 10%.
• This has an internal cooldown of 45s, starting upon proc.

Effective Spellpower

The effective spellpower granted by this trinket is calculated as a function of cast-time. Essentially, to get the most out of this trinket, you want shorter cast times. The formula for calculating the amount of effective +damage granted by this item is -

E = 850 * 10 / (45 + (t / 0.1)))

Where...

E = effective +damage
t = cast time

The following Java Program can be used to obtain a table of effective +damage for different casting speeds:

   public static void main(String[] args)
   {
       float crit;
       float time;
       float effective;

       for(time = 1; time < 6.5f; time += 0.5f)
       {
               effective = 850 * 10 / (45 + (time / 0.1f));
               System.out.println("<tr><th>" + time + "</th><td align=\"center\">" + effective + "</td></tr>");
       }
   }

External links

• Battle.net (EU)
• Wowhead
• Thottbot
• WoWDB