This doesn't exist in real Minecraft, it's fictional.
The Wither Quartet are 4 bosses that can be spawned at different times, but always usually end up connecting to each other. There is 4 withers that are at different difficulties, even though all withers are harder than the original.
The Withers[]
- Terra Wither (Phase 1 - Overworld)
- Infernum Wither (Phase 2 - Nether)
- Irritum Wither (Phase 3 - End)
- Arescet Wither (Phase 4 - Witherea)
Spawning[]
There is 2 ways to spawn The Wither Quartet, separately and compressed.
To spawn The Wither Quartet separately, you need 4 Nether Stars, 1 Emerald Block (Terra), 1 Quartz Block (Infernum), 1 End Stone (Irritum), 1 Withering Stone (Witherea). For the spawn egg, just use one nether star plus a wither block (emerald, quartz, end stone, withering stone).
To spawn The Wither Quarter compressed, you will need to do the above steps with the addition of 2 Dragon Eggs, 2 Beacons, and 1 Diamond Block.
Drops[]
Terra Wither
- 9 Quartz Blocks (only dropped if fought separately)
- 12 Eyes of Nether (only dropped if not been to Nether)
- 50 Emerald Blocks
Infernum Wither
- 9 End Stone (only dropped if fought separately)
- 12 Eyes of Ender
- 50 Quartz Blocks
Irritum Wither
- 9 Withering Stone (only dropped if fought separately)
- 12 Eyes of Wither
- 50 End Stone
Arescet Wither
- 12 Eyes of Despair
- 60 Withering Stone