Luck Craft opens after reaching Master Lv. 200 and performing Luck Upgrade with the equipment.
It can be found in the bottom right corner of the game screen in [Craft] > [Luck Upgrade] > [Luck Craft].
Luck Craft is available in 7 parts of the Godly Equipments with over Tier 6 after the Luck Upgrade.
After Luck Craft, default options of the equipment increase massively and a Luck option, or Lethal Effect Chance, is added.
When Critical DMG occurs, Lethal effect is activated at a certain chance, providing the Critical DMG to be increased by 10%
Luck Craft consumes [Stone of the Goddess of Luck] and Jewel of Blessing, and can be done for 1 time per equipment.