shilsen
Adventurer
Found it. It's called Hardening and is a 6th lvl infusion that increases an item's hardness by 1 per 2 lvls. It's also a 6th lvl Sor/Wiz spell and 7th lvl on the Artifice domain (introduced in the Eberron CS). Duration: Permanent.shilsen said:IDHMBWM, but I think there's a particular infusion (usable by the Artificer class) introduced in the Eberron campaign setting which raises the hardness of objects.