Azor Ahai Reborn
If Azor Ahai Reborn is attached to a non-R’hllor character. If I control an attacking R’hllor character, the attached character will be considered as participating in the challenge. However if that attacking R’hllor character character is removed from the challenge, the attached character will no longer be considered to be participating in the challenge anymore.
If Azor Ahai Reborn is attached to a R’hllor character and is considered to be participating because I control another R’hllor character that is attacking, is the attached character still considered participating after the original attacking R’hllor character that put the attached character into the challenge is removed from the challenge since the attached character is a R’hllor character itself? Unlike core Jon Snow, Azor Ahai Reborn does not have the requirement that it be another character that puts the attached character into the challenge.