Return to Najena's Dungeon and use the Sootfoot Bitey-Belt to leash a stunned Void attacker. Immediately, lead the stunned Void attacker back to Blisterzonk. You have just enough time to get back before the stunned Void attacker breaks the leash, becoming a raging Void attacker. There's no time to hail Blisterzonk! You must kill the raging Void attacker first. If you do not, he will rampage around briefly and return to Najena's Dungeon.