Bolster Object

Though it looks no different, the iron portcullis has become harder than steel. The ram can batter itself to flinders before the portcullis gives way.
Level: 6
Component Cost: 150gp
Category: Warding
Market Price: 300gp
Time: 10 minutes
Key Skill: Arcana or Nature
Duration: Instantaneous

The target object, which you must touch during the performance of the ritual, increases its hit points by 10% for every 5 points you have on your check result. An object targeted by this ritual multiple times benefits only from the best casting.

Bolster Object

Forgotten Realms Artifact Hunters: Reassembling The Avatar of Torm Rustyham