Suppose I have The Red Viper in play with a Milk of the Poppy on it. I also have Rattleshirt's Raiders. Now if attack in a military challenge with both and the challenge is unopposed I could choose the order of my own reactions, right? So in this case I would first use the Raiders' reaction, discarding the Poppy and then I could still use The Red Viper's reaction and gain 2 power on him for winning a challenge by 10 str
Or does the reaction on Red Viper not exist at that moment, because when the triggering condition was met I in fact didnt HAVE a reaction on Red Viper because of Milk?
For ease of reference:
The Red Viper:
Reaction: After you win a challenge in which The Red Viper is participating as an attacker, he gains 1 power for every 5 STR by which you won the challenge.
Reaction: After you win a challenge in which Rattleshirt’s Raiders is participating as an attacker, choose an attachment controlled by the losing opponent, and discard it from play.
Milk of the Poppy (attachment):
Terminal. (If attached card leaves play, discard this attachment.)
Treat attached character’s printed text box as if it were blank (except for Traits).