Board Thread:Questions and Answers/@comment-71.86.173.64-20130401204821/@comment-72.244.63.10-20130405044822

They also have Soul Shards: http://www.minecraftforum.net/topic/1475847-146-forgeirc-v1014-soul-shards-v126-and-recipe-remover-v11-updated-122013/#soulshards