Adamantine Armor

Armor (Any Medium or Heavy, Except Hide Armor), Uncommon
This suit of armor is reinforced with adamantine, one of the hardest substances in existence. While you're wearing it, any Critical Hits against you becomes a normal hit.

Make Magical Items with Templates
Magical items can often come with a lot of variants. For example, +1 armor can exist on Light, Medium, or Heavy Armor. For +1-3 armor alone that's 36 items! To keep your Compendia light and speedy we've created Template items which can be used to enchant any item. Now, the Armor, +1, +2, or +3 item and your chosen armor type is all you need! Here's how you can use them:
Open an item like the Armor, +1, +2, or +3, change to the Effects tab, and drag your effect onto your item. This will automatically apply the enchantment, bring over any helpful Activities and Active Effects, and update the item's description with everything you need to know.
To remove an enchantment simply open the enchanted item, change to the Effects tab and right click on the enchantment where you can disable or delete it.