hi @zaynmalivn! i seem to recall a similar question maybe like 3 months ago, i'll try to find it.

im really not sure if we can go beyond tertiary (maybe search the other .dats?)  or maybe one thing you can try is to edit the spawnclasses in those secondary and tertiary lines.  you can make custom spawnclasses witha  lot more loot and use those instead

Hey Zayn,

Making a custom Spawnclass is the best way to change what a particular monster or boss drops.  You'll need to select the spawnclass in one of your boss' treasure slots, but the spawnclass itself can hold any number of items (at least, I haven't found the upper limit yet).