The Wither King

The Wither King is the final boss of The Master Catacombs - Floor VII.

Boss Fight
The fight begins inside of a giant throne room. There are 5 orbs scattered around the room, with 5 caldrons in front of the throne. Each caldron has a certain color of clay below it. The players must place the orb with the same color as the caldrons block of clay in order for it to enter the caldron. After all 5 caldrons have an orb in it, The Wither King spawns on the throne.

Damage cannot be dealt to The Wither King, and he mostly acts like a spectator to the battle. The Wither King spawns 5 dragons. All 5 Dragons must be killed next to their dragon statue, which destroys the statue, otherwise they will be respawned after being killed. Once all 5 statues are destroyed, the Dungeon is completed.

If 10 seconds pass without a dragon being killed, then the players are teleported into the sky above the arena, and a hand will come up through the floor, closing around the players. This will cause the dungeon to be failed.

Appearance
The Wither King appears to be a Giant Wither in its invurnerable state, with 6 tentacles coming out of its body.

Trivia

 * The tenticales coming out of The Wither King's body could be based off of the Wither Storm from Minecraft: Story Mode.