Mage Tower Up Until Pre-Expansion Patch
Originally Posted by Blizzard (Blue Tracker / Official Forums)
Just giving some context to this! Yes it is officially up permanently until pre patch. Due to how the Broken Shore functions, the buildings will still be created and destroyed in the normal cycles however the NPC is now resistant to Legion Fel-Fire™ and will just permanently be standing there. Once pre patch hits though the appearances will be no longer obtainable so make sure you guys go get it while you have the chance!

So all artifacts will be lvl 126 with mage tower up all the time.
YEP! And they get stronger every week until pre patch! GO GET THEM APPEARANCES!

마탑형상을 얻을 마지막 기회입니다.