Urzael's Trap is a manuscript in Act V of Diablo III. It was written by Urzael.
The text, initially entitled "It's a Trap", drops from a seemingly-unguarded Resplendent Chest in the Walk in the Park event in the Westmarch Commons when the Reapers' ambush is unleashed by opening the chest.
It reads as follows:
"Nephalem, I knew the greed that infects your kind would not let you pass this chest by. And now, you shall suffer for it."