I really wanted to give you a higher rating but a few glaring plot holes in your story killed it for me. spoilers ahead. 1. the devourer is way too op. you basically killed your book, when the enemy can take out stars it's done. you will basically have to turn your MC to a goku saitama fusion hybrid just to beat them. your talking universe ending opness. 2. your choice of world building doesn't make sense. you went from a super high tech civilization that will more than likely have powers higher than nuclear fusion since they are able to use warp technology. which means they can vaporize planets and they still loosing remember. then you threw the story in a backward magic based civilization with no space travel capability. come on dude that's like going way backwards. I can just keep going on and on but bottom line you need to power down the devourer by a lot. think enders game or starship troopers. op but not impossible to kill. your current devourer format is too broken and way too op. wish you luck.
Aidka
Liked by 2 people
LIKEI get where you are coming from however, not all devourers are world ending powerful. the devourers power up by consuming energy meaning the biggest, baddest devourers are the ones that has accumulated so much energy by feeding on entire planets. the ones on this backward magical planet were from the cells that made it with the space ship. therefore, they have to level up from level 1. this is why the story makes sense the devourers could POTENTIALLY destroy the world but their strength is not there yet.