[Warlock] Keep the effect of Soulburn in the other spec

I just found that you can keep the bonus of the soulburn for the Demonic Circle: Teleport in the other spec.

For that :

• Switch to yout Affliction spec (if you have one).
• Use just Soulburn and nothing else.
• Swith back to your other spec while the buff of Soulburn is still active.

Tada... Now, when you teleport you have the speed boost and snare immunitie.
And it's not consume so you can use it as many time you want (unless you die).