I have got the Utility Belt (+25 deftness), the Honour Among Thieves (+3 defense), and the Medal of Freedom (+100 Deftness). Which of these accessories would help my thief's Half Inch be most successful?
The Medal of Freedom. The highest increase of deftness will lead to the better chances of Half Inch being successful.
Here's what I found:
Because it doubles the steal chance, Honour Among Thieves increases Half Inch's success the most.
The percentage of success for Half Inch is:
Where deftness is the character's deftness, and dropRate is the dropRate of monster's item.
For a character with 0 deftness, Medal of Freedom results in a success rate of 2.21 * dropRate. For the same character, Honour Among Thieves results in a success rate of 3.57 * dropRate.
Additionally: The percentage of success for the Thief's Theory scroll is