Is it just me, or you also feel like your field item drop rate doesnt make any sense? I have a level 50 Goblin's Blessing in Ancient relic altar which gives you plus 25 perccent field item drop rate, I also have a lvl 30 stone of luck which gives you 10 percent drop rate, Everytime i do farming im cosuming special and normal chicken soup, which also adds up on the drop rate. Plus the event scroll they gives, but it doesnt make any sense, i couldnt feel anything about my drop rate percentage. If it's all RNG then why put drop rates at all? 

 

Think about it this way - the chance of getting a good drop is like 0.000001% chance. Adding all these drop rate modifiers might only make the change 0.000004%

u forgot about outlaw mode.

Stone of luck is 10% increase drop rate of all spoils. "Spoils" refers to the chests that drop which are called spoils of battle. "All spoils" indicates that it increases this drop rate for 3 tiers of chests. Common (brown/gold), Uncommon (blue/gold), Rare (red/gold). "Spoils" does not refer to field items, it only refers to the chests that drop which all have a cooldown before another one can drop again. Cooldown time depends on chest tier, with red having the longest cooldown time.