Aegis Plate is an Armor in Bloodstained: Ritual of The Night. Aegis Plate isn't a Craftable Item. Armor is used to protect the wearer from taking damage and reducing damage from Enemies and Bosses. Different armor has different defense values and is, therefore more or less effective.
A breastplate that nullifies all damage from traps and hazardous environments.
Where to find Aegis Plate
The Aegis Plate cannot be obtained until the player has obtained the Invert shard. Once it has, return to the boss arena where you fought Valac. Stand just to the left of the tower, and use Invert. Near the roof, you should notice a chest just below some spikes. The armor is in the chest.
Video guide: /watch?v=2noAXOxe14s
Aegis Plate Notes
This item cannot be sold.