In going over the documentation for the official Pathfinder 1e character sheet (both the community wiki and official help center article ), it seems there are some buffable stats that aren't listed in the Buffable Stats section, such as the various relative AC bonuses (though these are mentioned later, in the AC Buffs special cases ). As a general rule, it appears that Temp fields are valid targets. These are also mostly the same as attributes ending with "_bonus" ("attr_critconfirm_bonus" being an exception). However, I'd like to figure out more specifically what the valid buff targets are, as well as figure out the limits of buffs. In short, I'd like to read through the buff parser & interpreter. I tried digging through the JavaScript sources of the character sheet, both in-game and from the character sheet page, and found some candidates ( vtt.bundle.f2d17e74c794fcd6a882.js for the former, legacy-sheet-server.latest.bundle.js for the latter), but could only find related code (e.g. that saved the buff when its mods field was edited, or that updated labels to add the lightning-bolt icon). I also tried searching for relevant keywords in the sources, which were dead ends. The sources are on the large side, with legacy-sheet-server.latest.bundle only 575 KB but vtt.bundle coming in at 39 MB. Can anyone point me to the relevant source code sections that handle parsing & interpreting of buffs?