Nanite Arena

The nanites in your synthetic cortex surge outward, dynamically connecting to one another to form a network of hardlight plates for 1 minute or until you use an Interact action to return all the nanites into your body. While the nanites are out in this way, you have the following characteristics. As a 1-action activity, you can create a 1-foot thick, 5-foot long wall of hardlight in a point you can see within 30 feet. The wall has AC 10, Hardness 30, and 70 Hit Points, and it's immune to critical hits and precision damage. The wall blocks physical effects from passing through it but doesn't block line of sight. You can use your senses as if you were in the position of any of these walls. If a creature is adjacent to one of the hardlight walls while moving, it can spend 5 feet of movement to teleport to a square adjacent to any of the other hardlight walls. While at least one hardlight wall is out, and if you're adjacent to a hardlight wall or it's between you and your attacker, you can use Shield Block as if you had a shield raised, using the hardlight wall's Hardness and Hit Points. The wall disappears after the reaction is used.