You have visited the void, and it has visited you. The flow of causality has slowly become more clear to you, influencing cause and effect like the hand of god hovering above. Is it true that man has no control, even over his own will?

You realize that nothing is as powerful as everything. Once per day as a reaction, you can allow your body and soul to become nothingness, removed from the flow of causality. During this time, the player's AC is increased by an amount chosen by the player up to 10 until the start of their next turn. The player must then pass a DC 10 + the amount of AC increased Wisdom saving throw or succumb to short term madness. If the player's AC exceeds 25 during this reaction, the Wisdom saving throw is made at disadvantage. This reaction occurs after the incoming attack roll is made and incoming damage is determined.