The Item Drop Rate can be increased through items such as Item Collection Increase Scroll and Item Collection Increase Scroll: Advanced.
Increased Item Drop Rate Formula
When the Increased Item Drop Rate effect is applied by an increase of +n%, a value proportional to the original items drop rate is added to the overall drop rate.
For example, when an Item Collection Increase Scroll +100% is in effect, an item with the drop rate of 1% is affected in the following way:
When the base drop rate of an item is 1%, 100% of the items original drop rate is added (1%) thus increasing the overall drop rate to 2%.
◈ Item Collection Increase Scroll Guide
Item Collection Increase Scrolls can be activated in the in-game UI.
You can access this feature from Menu - Adventure - Item Collection Increase Scroll.
- Item Collection Increase Gauge Lv. 1 and Lv. 2 have the same Item Drop rate effect. When Lv. 2 is activated, only the Item Drop Amount increases from 50% to 100%.