Welcome to Create: Eye of the Storm. A multiplayer Create server with Clockwork: Melting Point. The goal is to have a pretty standard survival multiplayer experience, with some PvP/PvE, and players are given around 2 weeks to prepare for doomsday.
Phase 1
There is no other-worldly threat, Players simply play create mod how they normally would. Build an enterprise, go to war, make a megabase, whatever.
Phase 2
The Witherstorm is summoned, and all dimensions are shut off. any alliances, weapons, or builds are put to the test. It knows where you are, you can't outrun it on foot, it will collapse any cave or underground structure, and will target and pick up physics objects. Hide away in a dimension, or try to fly away. progression is the same as default, eventually someone will make the Formidi-bomb and destroy it.
Phase 3
The Witherstorm is back up, even stronger. Now the progression is different. After awakening, Multiple Witherstorm Segments will spawn around the world, and must be defeated with your military might to progress. if completed, you'll fight a different mini-boss for specific materials to craft a special cannon shell to use to reveal the command block. The final fight requires constant damage done on the outside to allow the players on the inside to survive long enough to defeat it, it has to be fought at an army-level scale. oh and it's on apocalypse mode.