Prerequisite: Can only be used by an Echo Knight.
When you use your bonus action to manifest your echo, you can choose to make it erupt with dunamanic energy and either manifest aid giving every creature within 5ft or you echo a bonus to AC equal to your Constitution modifier (min. +1) until the end of your next turn, or manifest harm forcing every creature within 5ft of your echo to succeed in a dexterity saving throw against your Constitution Save DC or take 2d4 force damage. You can use this feature a number of times equal to your Constitution modifier (min 1).