I vaguely remember a weapon in an old text based multi-user dungeon (MUD).

It was cursed: once picked up it couldn’t be put down. It was also very powerful, with only one downside: randomly you’d hit an ally in the same room instead of the enemy.

Reminds me of a lot of things in the world.

It was also just at the right level that you’d be getting self-confident and even a bit cocky, but not experienced enough to recognise such an obvious trap.

Of course, I dual-wielded two of them like a maniac to the dismay of my party. I only killed a few allies! An accident, I swear. Not my fault.

Like that classic scene from Get Smart:

Saeed [grinning and pulling out knife]: Now that we have the Control agents, they're at our mercy.

Abdul: Put your knife back in its scabbard, Saeed! I've got other plans for Agent 99 and Maxwell Smart!

Ssshhhhrrrrr

Saeed [looking sick]: Abdul...I don't have a scabbard.

Abdul: [turning to look]: You do now!