Grav round question

[LeonidasSith]

The spell tooltip say that it "Fires a round that creates a gravity vortex on the target (...) leaves the target vulnerable to High Impact Bolt"

 

That seems a little vague. Vulnerable to HIB in what way?

 

Thanks

[Sorotas]

usually u are limited when u can use HiB, like when the target is knockdowned or under a burn effect.

 

With the GR Debuff on the target u are allowed to use HiB on this target.