Direct answer: Lucky Snatch II opens after the September 17 maintenance and lets players spend Orb of Greed II for a chance at Star Fragment prizes, including a top prize of 30,000 Star Fragments.
How do I get Orbs?
Complete the event's Daily Missions. Up to three Orbs of Greed II are available per day, with the daily reset at 07:00 UTC. Orbs obtained in the new event do not reset separately during its window.
What are the event rules?
The server-wide prize pool contains Star Fragment prizes of 30,000, 10,000, 3,000, 1,000, 300, and 100. Remaining quantities update when entering the event screen or every minute. Once all Star Fragment prizes are exhausted, the base reward is Gold x100,000.
What should I remember?
Unused old Orbs of Greed do not carry into Lucky Snatch II, and unused Orbs of Greed II reset after the new event. The event requires Main Quest “HP Recovery!” and rewards cannot be claimed after the event ends.
Official source: Lucky Snatch II - Spin, Orb of Greed II.