
Evolution
Mighty Borer Description: The Mighty Borer drills through foes, destorying all in its path.
Spiky Borer Description: The Spiky Borer continues drilling and additionally shoots spikes
I remember waking up at Midnight on Lake Morraine in Canada to the first mining event and the Mighty Borer. I would have stayed up and cleared the quests if I realized the 30 axes per quest was a bug.
I didn't get the borer last year, but I did get it last week! Turns out its one of the best, most versatile special weapons in the game.
I'm working my way up the forge ladder, but it's a solid S Weapon. You can immediately add it to your build to replace Chain Lightning. The knockback is great for Nightmare and Arena. The slow at 4* is great for everything. And Homeseeker at 5* literally doubles the damage.
So I have the Mighty Borer at S in early, mid, and late game normal and hard mode. They are S in Faction Wars and S in Dungeon, Arena, and Adventure.
They are lower priority, maybe B tier, in Hero Clash.
They are S- tier for Nightmare Mode once you get it forged up to 4 and 5
And it's S tier in Boss Brawl at 5*, but only A tier before that..
The 3* forge "Demolition Drill" is an above-average global buff. It increases damage x1.025.
Duplicator and Cooldown dramatically improve the efficiency of the Mighty Borer.
Borer evolves from Damage Tome, which is core to almost every build, making it an easy evolve. Borer has a true claim to being the best weapon in the game.