The "absolute engineer's brooch" was created by a great craftsman, capable of shaping the heavens in her hands. Because such an item is capable of making a creature survive great damage caused by electricity.

Blessing of Zeus. The brooch absorbs much of the lightning damage dealt to the user, giving them resistance against this type of damage. Furthermore, if the user receives lethal lightning damage, the brooch absorbs it, leaving the user with 1 health point instead of knocking them down incapacitated. The brooch is destroyed in the process.

Blessing of Hermes. The brooch gives the wearer advantage to resist attacks or spells that cause lightning damage that require a saving throw.

Blessing of Hera. The brooch gives the wearer 10 temporary hit points that recharge at dawn when depleted.

Notes: Resistance: Lightning