Upgrade: The Vorpal Die

Expand your Crits!

This acrylic 12-sided die is engraved with graphic results resolving crits from a Sword of Sharpness. Each side has something being severed!

They're also great for resolving swinging blade traps, attacks from a giant's battle axe, or really anytime the GM thinks a player is walking around with just a smidge too many limbs. 

The rules PDF is available here.