School Of The Shattered Mirror

this is my first time making homebrew so i wont have the stuff for using this in d&d beyond sadly since i dont really understand that stuff

please give me ideas on how i could balance this in the comments

Shatter Magic

at level 2 because of your knowledge of mirror magic you gain the ability to replace the damage from any damaging spell with magical piecing or slashing damage, you can use this an unlimited number of times

 

Shatter Step

 

at level 6 you can shatter reality to link two spaces together. once per short rest you can open two portals that last for up to one minute, you can make it close instantly as a bonus action, it automatically closes after you get knocked unconscious, to maintain the rift you must keep concentration. the number of rifts you can open increases to 2 at level 10, 3 at level 14 and 5 at level 20

Mirror Stance

at level 10 you gain the ability enter a mirror stance. the mirror stance is similar to a displacer beast's displasment ability. you can use an action to enter a mirror stance, while in this stance enemy's have disadvantage with melee and ranged attacks directed against you, you can use this once per long rest and it lasts for 1d6 (minimum of 3) rounds

Improved Mirror Stance

at level 14 you gain an improved mirror stance. while in your mirror stance you gain a ac of 15 if you don't already have a higher one, the length of the stance in increased to 1d8+1 (min 4), also while in your shatter stance you can use an action to become invisible until you use a bonus action to end it or your mirror stance ends, you can also choose to send out a illusory copy of yourself while invisible, this copy has 5 hp and an ac of 5, automatically fails saving throws and is frightened of all enemys