Create Spectral Platform

Using this spell you can create a 5x5 invisible square platform. To any allies they just see a golden trim of the platform. When reaction casting this spell you can only create 1 platform but when you use an action you can create up to 10. These platforms have an ac of 13 and 1 hit point. For any enemy or just anyone who is not an ally they have disadvantage to hit it unless they touch the platform first or can see someone else touching it. A non ally creature can also make an intelligence save to tell where they are. The platform can also be placed in any direction and any configuration as long as it remains a 5x5 square platform.