So I'm still pretty new to the Lost Grove (still on stage five and trying to finish the Barracks) and I've noticed the drop rate is really weird for certain items. Obviously iron ore and spritely branches are the most common so its easier to get those versus other items, this is true. However I've noticed the items that are deemed "uncommon" (blue) are much more harder to achieve then items that are deemed rare (purple).

I'm currently building the Training Grounds portion of the Barracks and it requires only 9 Battle Trinkets, 100 Sylesti Collars and 200 Worn Equipment.. Even though the battle trinkets are supposed to be harder to find I have 76 of them and I only have 50 collars.I have around 100 worn equipment which is greater than the Battle Trinkets but it still seems strange that the numbers are so close. I can do a Grove run and earn about two or three battle trinkets and probably earn the same amount of collars and worn equipment. These odds seems very weird to me considering the drop rate is supposed to be rarer for battle trinkets. I've also noticed this to be true with other rare items such as Glossy Feathers.

I'm not sure what could be integrated to fix this problem but I just figured I'd post it here to shed some light on the problem. It's very frustrating trying to build the barracks when you have all the "hard to find" items and are struggling to get the easy items.

I think the reason 'rare' items feel sorta common is because a lot of 4 & 5-star enemies drop them, and sometimes those guys even drop multiple. Blue items, meanwhile, are very rng-based instead of having a guaranteed drop from someone.

I would definitely like a higher drop rate of these things, though, since unlike bosses you already have to encounter these enemies through random chance and then you're not even guaranteed to earn the item! Mending charms are especially a pain since menders seem to be so much rarer than other enemies.