Wither Expansion brings to your Minecraft world a new enemy: The Wither Empire. Wither Skeletons want to take over the nether and the overworld again, like they did 1000 years ago... And your task is not letting them do It! The addon will not appear in your world until you travel to the Nether, where you will start finding new variants of the withers, maybe u are lucky only finding some of them using bows, or u can find the brutes, who already have the full netherite set...u can find captains on the nether wastes, they have in their back a red banner and their patrols will come to help him if u approach to him, if you kill one, he can drop a misterious bottle...like the ominous, but this bottle doesn't care where are u, if u manage to use It, a nether portal will appear and the withers will leave it to kill u...take down the portal and get the rune fragments that u will put in the crafting table in some random way to get a table that enchants your equipment

RAIDS

These raids from the wither skeletons are more simplier than the illagers raids...and that makes them even WORST...

if u use the withered bottle, the Wither Empire will know where are u (in any dimension) and they will open a nether portal to catch u... The portal has a rune on its top, the rune teleports the portal to a desired destiny, or for travelling into the nether...the waves of enemies are insane so u must defeat the portal the fast as u can...

(i understand it can be too hard so when im writing this i want to make raid levels, from level I to level V, thats why u can find 5 withered bottles in creative mode, but they dont do nothing...the level IV and V are already in gameplay!)

Tere is also 3 bosses from *The Nether From The Past* that u can summon and fight them to get new items and stuff...

And Who are these bosses???

Jiket-Zal, The preacher: This wither skeleton was the first to discover the dark arts and quickly rose to power due to his skills and intelligence; his resurrection pendant is crafted with a lead, a nether star and a soul gem, Kill him as soon as possible, because he likes to invade your world with withered Vexes! Or even worst, he can bring back...

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The Alpha One: It used to be a great warrior, and Jiket-Zal saw him as the future of the empire, sadly He died in a well-planned ambush by the piglins, but Jiket-Zal rescued his soul in a bottle and learned to bring him back only when it was truly necessary...He stands out from the other witherized Vexes because he has a bloody face and wider eyes, and he also uses a netherite sword...In its FIRST phase, besides tormenting you, it can also bring more witherized Vexes. Jiket-Zal will have spent a lot of energy bringing Alpha One and needs to rest, but when you defeat The Alpha One, It will grow to your height, now surrounded by 4 rods, it will chase you or jump to kill you, and projectiles do not affect him!

Llat-Zer, The Illusioner: This king with a fake crown has a face carved with a macabre smile; he seeks to drive you insane while you remain alive. He has the ability to blind you with every blow he delivers and to clone himself in multiple versions both he and his clones can teleport, but with good armor and equipment, you can put an end to his madness (until I decide to buff him). Resurrect him by crafting his amulet with a lead, a nether star, and an ender pearl. 

Haundur, The Eternal: He was The Great Commander of The Greater Wither Empire...he will wield always his armor and one of his weapons, he can summon souls with his weapons and he will be riding on the back of Reipskalibur, the devourer, This other boss is basically a giant ravager that can break almost all Minecraft blocks, its field of vision is very high and its bite is lethal, plus it's fast, so this duo is mortal...Craft his amulet with a lead, a nether star, and a ruby. 

Killing these last two doesn't end the battle; if you have two free inventory slots, you'll automatically receive Haundur's skull and a Reipskalibur amulet, but at the cost of what u did...The withers of today and those of the Nether from the past They will ally to take you down and avenge their (again) deceased leader, so you have two options: flee and never return to those chunks, or stay, suffer, and emerge victorious...defeat the Ancient Portal will reward you with an Invincible rune table, which enchants all your weapons with unbreakable and mending

oh and.....never place 3 soul soils, one soul sand, 2 wither skulls and 1  Haundur's skull....NEVER!!! Unless you want to watch the world burn...