The Creature will be gone for good, one of your opponents will be stuck with the unlucky Artifact, and youll get a Treasure, too
White options include Mondrak, Glory Dominus and Anointed Procession
Mothra, or Luminous Broodmoth, doesnt see much play outside of Dual Commander for competitive-ish formats, so most of this price increase is likely a result of Commander and potentially even collectors
Finally, it has quite a good tax/card draw ability in White, which is something that a deck like Death and Taxes might be interested in
One attack can accelerate your mana, deal damage, and steal value from the opponents deck all at once
This isnt so bad of an effect, but it could synergize much better with myr