Sky Islands [version 3.0]

In the year 3067, the Crafter's Legion began exploration of the Nether dimension, previously banned territory due to the 'leaks'. Well, long story short the ballsed it up and released an army of Withers into the world. Over the course of 300 years, the withers blasted their way through the earth and demolished the core. The world broke apart unto the point were island clusters were few and far between. You stand on an island near the original breach, and your task is simple: revenge. The Withers killed your family and murdered everyone you know. When the core blew, the majority were destroyed, but one remains, trapped in a bedrock prison in the end. You must gather the necessary materials and summon the wither from him prison, so you can slay him.