Artificer's Armour

This spell causes the carved scales of the staff to expand outward and encircle the used of the staff.

Artificer's Armour causes an aura that clings to the user to appear. When it is summoned, the aura has an AC equal to that of the creature, and HP equal to double the maximum number on this character's biggest hit dice plus the character's proficiency bonus.

While this aura is active, it is impossible to bypass and all damage must be redirected to the aura until it leaves. The aura persists until either it is dispelled, dismissed, or reduced to 0 hit points.