Could you suggest a few ideas for this boss to me

It has 400 Hitpoints

The only stuff I got so far is are two attacks:

One of them is just hitting the player (The bigger hand is slower but does more damage)

And a slam attack that does not do damage but launches the player away like the enderdragon but more further and less higher

It could summon shadows and stalkers to attack the player

It could also possibly shoot some sort of projectile

I also want it to be able to block attacks by using it's big hand to block swords, axes and bows (It will stop holding the hand up when it is hit with a axe or if a few seconds pass without anything happening)