Bit of a noob, help understand this please.

I'm still quite new, this is baffling, I have lae'zel and was looking at other cards and saw this, how would you use this? Is it good or a waste? I'm not sure how it works.

Any help is greatly appreciated. Thanks!

I'm still quite new, this is baffling, I have lae'zel and was looking at other cards and saw this, how would you use this? Is it good or a waste? I'm not sure how it works.

Any help is greatly appreciated. Thanks!