Scroll of Slayer's Insight

Description
Your party gains 250% XP from combat. Slayer's Insight ends if you fail to kill a boss for 5 minutes. Double-click to activate. One use only.

Acquisition

 * Loot from monsters (rarely, most likely from bosses)
 * Can be bought from the Rare Scroll Trader when in stock
 * Pokhe in the Great Temple of Balthazar in exchange for 2 Silver Zaishen Coins and 50
 * Trade for it from a collector: