Azeroth Mini Collection: Mechagon
Drops from Azeroth Mini: Starter Pack. It would be kind of neat if they added these to every old zone in the game, with achieves and titles to get you to "catch em all."
The 
Azeroth Mini Collection: Mechagon is a Battle for Azeroth toy obtained through a quest, starting with the 
Azeroth Mini: Starter Pack.
Guide awaiting review
Obtain the Starter Pack
Acquire the Azeroth Mini: Starter Pack, which begins a quest flagged in the item tooltip. Note that once used, no quest is added to your mission log.
Scan for Mini Figures
Travel to New Home and look near the main fire of the village for a mini figure walking around that is clickable, granting a buff called Azeroth Mini-Scan for Fight.
Place Your Collection Toy
Use the Azeroth Mini Collection: Mechagon toy to place a base, then summon one of your mini figurines to battle the figure you scanned.
Summon a Second Figurine
After a summoned figurine floats above the base (roughly 5 minutes after placement), you can summon a second figurine and the two will fight each other.
Unlock Most Minis Wins
There is an achievement tied to this toy called Most Minis Wins, earned through engaging with the mini figure battle mechanic.
