Wound Threshold with Corruption
 

I've gotten a semi-functioning custom Daemonic Corruption working for my player's "Reforming Daemon" PC, and one of the major facets I want to make is a triggering display whenever they hit or go below a certain Wound Threshold. Flavor-wise, I want their innate Daemon self-preservation instinct to kick in and push them into a 'Feeding Frenzy' whenever they go below that HP Threshold, with various effects manifesting in their character (Will save drop, gaining a Bite attack, speed boost, etc), and a popup or display somewhere that reminds them they are forced to pass a 'Hunger' Will save or attack the nearest potential prey every turn.

Where would I find the Wound Threshold eval scripts to work with? I can foresee needing to enable Wound Thresholds on the character, but I still need at least an example of something that would interact with the display as an example to work with (like key terms). If I do end up just needing to enable Wound Thresholds, I'd like to be able to at least see the scripts that run so I can counter them when necessary with the Corruption itself.