Spell Haste

Information is rather sketchy on this, but I think given is that there is little point in hasting something below 1.5 seconds, which is the Global Cooldown. Also, spell haste is calculated after talents.

Now, a few points to keep in mind.

• With Bane, the casting time for Immolate and Shadow Bolt are reduced by 0.5 seconds.
• The only spells I use in combat with casting time are Unstable Affliction (1.5 seconds), Immolate (1.5 seconds with Bane) and Shadow Bolt (2.5 seconds with Bane).

Obviously, it doesn't help with UA & Immolate. With Shadow Bolt, any more than 40% would be wasted. So, Spell Haste only helps one spell. Even though that is spammed during boss fights, I think that +dmg will still be better in the end as that will benefit all spells, including DOTs.

So, for locks (especially affliction locks), I'll rank it about equivalent to +crit. The benefits will be less than +dmg and +hit. Take it if offered, but don't sacrifice those stats for it.