Corundum Guardian Reborn

As the summary says, this mod adds corundum guardian from corundum meadows mod in 1.16.5 to newer versions. Also, it got some more upgrades too. Unfortunately, there's still no way to meet it in survival. Maybe you can use this for a boss for modpack, practicing boss fights, etc. Almost all of its stats are configurable, so you can set them to your taste.

It has two main attacks:

punch

leaping

About its "punch", it swings its both arms irregularly when the enemy is close enough. Also, there's a chance to swing its arm in row.

About its "leaping", it jumps towards you while fighting. Its jump distance is not that far, but its landing will cause shockwave that grows with time. Even just like its punch attack, there's also a chance to use this attack in row! Still, you can easily avoid the wave by jumping. Also, when the guardian is in fluid type blocks or not on the ground, the cooltime won't be refreshed, and the shockwave won't be caused after landing.

The video below will show its behavior more directly.

Original mod link

 The site I used for getting sound effects