In the Box.

The box unlatches easily.

Within rest a large number of odd coins you've seen before: aboout five inches in diameter and half an inch thick, strangely light and slightly warm to the touch.

Just holding one fills you with despair, anguish, and a desperate rage. It's agonizing to hold more than a few at a time.

There are thirty coins in total.

You recognize the script as Infernal, but you can't read what it says. It seems to be mostly consistent across coins, with the exception of the script above the trident, which differs on every one.