I think it’s safe to say that Friender the mechano wolf is the first legitimate taming challenge discovered in Legion. We have Treble and Rush, which are found via track hunting, but Friender is something completely new. Shout out to Kyfus who was the first Hunter to discover this one.
When Blizzard first announced mechanical pets they specifically mentioned a mechano strider challenge in Gnomeregan. So far, we haven’t seen that one specifically, but it’s possible that Friender is the end result of that original idea. He should be tameable once the 7.0 prepatch goes live before Legion.
To begin, make sure you can actually tame a mechanical pet. Gnomes and Goblins can do so innately, but other races must obtain a Mecha-Bond Imprint Matrix from their local engineer. Unfortunately, engineers won’t be able to craft this until Legion, so only Gnomes and Goblins will be able to do this in the prepatch.
Secondly, the buttons can only be used by level 100+ players.