Mithril Drill

Mithril Drill6 000 CROWN in game 30 GRAM in the presale

Adds +50 mining power. The power of every drill you own adds up, so a new drill does not replace the old one, it stacks on top.

Shards per hour from this drill = 50 × 300 × buildings × boosts × depth

At current competition that is about 324,14 CROWN per day, paying back in roughly 18,50 days.