Dear Sarnaut,
Welcome to the "10-20-30 Event" - a booster designed to squeeze more value out of your crystal purchases. In the words of Goblin Banker, "It's good business" - although it was hard to translate his coughing and mumbling at the Boutique Interview.
Unlike other artifacts that deal in chance, this event deals with a guarantee:
- 1,000 Crystals or higher gain 10%.
- 4,000 Crystals or higher gain 20%.
- 10,000 Crystals or higher gain 30%.
- All bonuses are supplied via Premium Crystals.
More info here!