Z is for Zweihander of Zeal

[over the course of the month of April, I committed to posting a topic for each letter of the alphabet, sequentially, for every day of the week except Sunday. While I was sorely tired of the challenge after only 15 days, I am trying to "stick to it." Our topic this month? Magical weapons for a B/X campaign. All such weapons are +1 to attack and damage rolls unless, unless specifically noted otherwise. Each of these weapons should be considered unique items]

Z is for Zweihander of Zeal. 

The zweinhander is the two-handed greatsword popular with Swiss and German mercenaries of the 16th century. For B/X play it is treated as a standard two-handed sword in all respects.

The zweihander of zeal empowers its wielder, transforming her into a nigh unstoppable force. In combat, the wielder is unaffected by mind control (like sleep, charm, and hold spells) and is immune to any type of paralysis or petrification effect. Even the complete reduction of her hit points will not stop the wielder of the zweihander of zeal; she will continue to fight until her body is completely destroyed (reduced to -10 or less hit points)...mangled and hewn to pieces.

When combat ends, the animating effects of the zweihander of zeal fades. If its wielder's hit points are zero or less when this occurs, she collapses and dies.

The final word in melee combat.