Shiffar's Nexus-Horn

Shiffar's Nexus-Horn is a powerful caster trinket that has a chance to give a buff to spell damage after criting.

This item drops from Harbinger Skyriss in the Arcatraz, the 3rd wing of the Tempest Keep on both normal and heroic difficulty.

• There is an internal cooldown that prevents this trinket from proccing more than once every 45 seconds.
• It can proc off anything that is considered a spell and that can crit, this includes Healthstones and Heals.

The effective +damage granted by this trinket is affected primarily by cast time and critical strike chance. This trinket gains more benefit from shorter cast times and higher critical strike chances.

The formula for calculating the amount of effective +damage granted by Shiffar's Nexus-Horn is -

E = 225 * 10 / (45 + (t / (0.2 * c))) Where... E = effective +damage t = cast time c = critical strike chance

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) { for(crit = 10; crit < 101; crit++) { effective = 225 * 10 / (45 + (time / (0.2f * (crit / 100)))); System.out.println(" " + crit + " " + time + " <td align=\"center\">" + effective + " "); } } }

The four main(Base) casting speeds which should be considered, along with a shortened table for each, are given below:

• 1.5s - Scorch, Searing Pain, Wrath

• 2.0s - Lightning Bolt
• 2.5s - Frostbolt, Shadowbolt, Incinerate
• 3.0s - Fireball

For comparison's sake, Icon of the Silver Crescent, if used every cooldown, adds 68.7 +damage (25.7 +damage coming from its on-use effect).

• Sextant of Unstable Currents