how to get eternal trophy ?
Convert 400 rare chest into 20 legend chest then convert the 20 legend chest into 1 eternal chest then pray to the RNG gods for an eternal trophy.
do we have to be in eternal leagues ?
I don’t think so. I think as long as you can earn the eternal chest from converting , then you should be able to get one.
Taken from the FAQ thread of BA
Edit a tip from Dieter (Got it searching for Eternal Trophy)
is that trophy is for your pet?