Board Thread:Questions and Answers/@comment-108.32.188.194-20130420011438/@comment-84.193.249.89-20130420055514

"The Redpower2 mod for Minecraft removes the default chance of a mob dropping its head, and instead adds the Vorpal enchantment. When killed with a Vorpal enchanted weapon, mobs and players have a chance to drop their head, increasing with a higher Vorpal level. The Vorpal enchantment also gives a chance for your attack to deal a large amount of damage."

"Disjunction is a sword enchantment added by RedPower 2. It makes weapons stronger against Endermen and Wither Skeletons (Not Wither), similar to Bane of Arthropods does to spiders. You can get 4 levels of Disjunction on an enchantment table. You can get level 5 by combining on an anvil."