A Hella Cursed Mega Doom Sword

A MEGA HELLA CURSED DOOM SWORD

(title inspired by this post: http://wizzzargh.blogspot.com/2018/02/hella-cursed-mega-doom-swords.html)

Swordbarrow has been delved and THE FINAL SWORD has been uncovered. This is wildly powerful and destabilizing and requires fiddly GM interpretation, so GMs are advised to disallow it from entry into their games. Seriously, do not let this into games you're attached to it's a Hella Cursed Mega Doom Sword. Players, no complaining if a universe doesn't allow it. 

THE FINAL SWORD

It is as much the platonic ideal of sword as it is a physical object. It appears like a sword that's just a bit too large for the wielder to plausibly use, but also sorta reminiscent of the most iconic sword you can think of, whether that's excalibur or a lightsaber. The exact details depend on the genre conventions of the world it's brought to and the GM running it, but that's the general idea.  

+[whatever the highest + a magic weapon can have in the system/game it's being brought to. The search for weapons with bigger numbers is pointless now] 

NO WEAPON BUT THIS ONE: you cannot use any other magic weapon. If disarmed or destroyed, it returns to the wielder the next dawn.

REGARDLESS OF SCALE: When you attack something with the sword you damage it as if you were something of equal size/scale. For example: giants are hurt as if they were attacked by an equal-size sword wielding giant, armies are hurt as if attacked by an equal-size sword wielding army, gods are hurt as if attacked by an equal god. Note that this confers no defensive powers. 

DIE BY THE SWORD: When a natural 20 is rolled on an attack, or when you choose to activate this ability, you and the target of the attack are both totally destroyed.  Only a Wish spell, miracle from a powerful god, or effect of similar power can reverse this- and anything that brings one back also brings back the other.