The MasterBoss for Minecraft 1.21

Datapack is only for version 1.21. No texture pack is required.

Crafting:
Find the recipes for the 2 new recipes in the images

Summoning:
To summon the master throw 1 stack of rotten flesh, 2 diamonds, 1 skeleton skull, and 1 egg on top of a lapis block. This will summon TNT and arrows upon summon and instantly spawn the master.

Attacks/Defences:
The master has 5 main attacks/defenses. The tp attack teleports the master right on top of you. The magic sword attack throws diamond swords in every direction. The TNT attack summons TNT on top of the master causing any obstructing blocks to be destroyed. The fire attack summons a square of fire near the master which goes out quickly. Finally, the master gives any player too close slow falling, this prevents critical hits, the ability to jump and sprint for maximum speed, and makes the mace useless.
In addition to these the master will slowly regenerate health, is blast and fire-resistant, deals a lot of thorn damage, and summons 10 arrows upon its death loot being obtained.

The master will despawn if the player is too far away.