The Cracker's Wither Storm modpack
So I decided to update this modpack a little since the older version was really laggy, it was my first modpack so...
In this new version I decided to remove some mods and add better ones, also fixed a bit of the lag issue.
This is a hardcore modpack built around the Cracker's Wither Storm mod, here you'll have to fight the Wither which is now much stronger than before, he has around 6-7 phases so watch out.
To make things easier I added new weapons, combat mechanics such as the "Epic Fight" mod which brings a whole new minecraft combat system and also parCOOL c:
The world is filled with vanilla mods to make it look cooler and prettier. Some of these mods are - Biomes O Plenty, Tough As Nails and many structure mods to make the world more lively.
Here's also a showcase of the Cracker's Wither Storm mod:
https://www.youtube.com/watch?v=zVeuY6JK4t8
A few tips:
Don't try to take kill it with projectiles
If you're using shader the last phase of the Wither might cause some lag (trust me)
Watch out if your making an animal farm, they can be infected

Anyways, hope you enjoy this new version of the modpack, enjoyy!! :D