This time, Spike has really screwed the pooch. He woke up one morning with a letter from Protoman and he told him to go the forest and burn it. With fire. It also said that if he didn't, he would die a horrible random death. He couldn't die! He was needed for important stuff like sending and receiving letters. And shelving books. So he decided to listen to this ponies words of "wisdom" and burn the Everfree Forest.