In the dead of night, in the creepy graveyard, there's this old statue. It's said that if you call out to the Grim Reaper there, he might show up. If you're dead and you want another shot at life, you can ask him. But it's gonna cost you—5000 simoleons. And if you say no, he's gonna unleash his fury on everyone around, living or dead.
Here's the catch: if you're alive and you try to bargain with him for immortality, he won't take kindly to it. He'll just end you right there.
He has this weird routine too. Sometimes at midnight, there is a slight chance he drops this pot of gold, messes up some plants (only the ones you put down in build mode), and brings a ghost to possess you. It's like a whole spooky ritual.