| Category | Resources |
| Type | stone |
| Source | natural - Abyss |
The Abyssrocks are translucent, ashen-hued stones suffused with a sickly yellow-green liquid. This exceedingly rare mineral, indigenous to certain Abyssal realms, harbors a potent concentration of entropic and demoniac energies. A non-chaotic evil entity struck by an Abyssrock sustains 1-4 hit points of damage plus 1 additional hit point per level of the affected creature (Fortitude save DC 16 to negate all damage).
If an abyssrock and hellstone are brought into contact, the consequences can be catastrophic, resulting in a fiery, gaseous explosion. The impact inflicts 6-36 hit points of searing fire damage and leaves behind a deadly yellow-green cloud akin to the cloudkill spell, extending in a 15-foot radius. This noxious vapor gradually disperses over the course of a single turn.