Got an odd question on the timing of pulse wave. I'm thinking of running a black lantern and Sinestro Corps team, and was curious of the following effects happening. Giving the Black Lantern Batman from DC 10th a construct from a power battery with the Sinestro Corps ring attached, then having Batman use his special pulse wave with a Sinestro Corps member in the blast.

Rain of Black Rings: Batman can use Pulse Wave as if he had a range value of 8. When he does, friendly characters that share a keyword with Batman reduce damage dealt to them to 0.

Does the fact Batman gets the Sinestro corps keyword from the ring protect the other Sinestro corps member?

Also what if instead I was using the black lantern ring on the power battery instead, with a construct on a Sinestro corps member. Would the character then reduce damage or would the pulse wave ignore the keyword given by the construct?

Edit: TL;DR: When does pulse wave check for keywords, before ignoring effects or afterwards?

In the case were Batman is gaining the keyword, the damage is definitely reduced to zero.

In the case where the other character was gaining the keyword, I would say that the damage is not reduced to zero because game effects possessed by that character would be ignored when lines are drawn to it, which is well before any damage would be dealt.

Thanks jwb441, that was my thought process as well just wanted to hear from others point of view.