Against the Ice Queen
Spear of Manhunting
Spear of Manhunting +1: Functions as a +1 spear with +1 to THAC0 and +1 to damage rolls. Once per day, on a critical hit, the wielder can elect to cast Hold Person as an immediate action upon the target hit by the attack.
We got this from a troll as we were fighting all kinds of creatures at the portal near Brackenbeck.