How to Get Aelon's Rejuvenating Longbow in Throne & Liberty You can obtain Aelon's Rejuvenating Longbow by defeating the Grand Aelon Guild Boss in Throne & Liberty. Before you can fight Grand Aelon, you must complete the Purification Efforts Milestone, which requires your guild members to complete 100 Resistance Contracts on the Purelight Hill. This is not a guaranteed drop, you may have to defeat Adentus multiple times to get the item.