Master Star

Master Stars are items which imbue 5-Star dungeon gear with "Master stars" which give a +5% stat boost while in Master mode catacombs.

They drop with an unknown chance from Master Mode Floor 3 and upwards. Up to 5 can be applied to any one item.

There are 5 levels of Master Star, and one of each is required to level up an item to 10 stars. The First Master Star is obtained on Master Mode Floor 3, the Second Master Star is obtained on Master Mode Floor 4, and so on. Lower levels of Master Star must be added to an item before a higher level Master Star can be added. For instance, you cannot add a Second Master Star to an item if it does not have a First Master Star.

When you have a 5 star item you can use the first master star to turn one of its stars red, this gives it 5% more stats in master mode additive to the 10% from stars and catacombs bonus. Then you can use the 2nd to turn the 2nd red etc. up to 5th.

The 1st star takes 300 levels to apply.