Thread:Newershadow/@comment-65.24.156.49-20150413081915/@comment-4010041-20150420194949

Strength of Oaks was only obtainable through the Call of Heroes (http://castleage.wikia.com/wiki/Call_of_Heroes) promotional event.

Unless you still have 5 Hero Potions left from this event to use in Alchemy, you can no longer get either Kilgore or the Strength of Oaks.