Book 6 of Stonesword Saga
 
The epic conclusion to the Stonesword Saga chapter book series, which takes a group of intrepid Minecraft players deeper into the game than ever before! In their last adventure, Morgan, Harper and their friends barely survived a dangerous game, only to return to a Minecraft Overworld in total chaos! The rift that's been growing steadily larger in the sky is now on the verge of consuming everything in its path. The team has one chance to save Minecraft and their friend the Evoker King – but it may already be too late.
 
Ab Mojang Minecraft