Talk:Wisdom/@comment-112.206.69.31-20170723092811/@comment-28010705-20170724095735

Available at Sage's Tower/Tower of Might (賢者の塔／力の塔) and the quest is Search for the Sorcerer's Sword (探せ！聡慧の剣); 3 waves, 20 AP cost each.

The quest is available for me even if and never unlock Katya (Original) but I already pulled Katya (Version 2). Check it out.