Lynde, Cheerful Tormentor

In a multiplayer game, if a player enchanted by one of your Curses leaves the game, perhaps because they have been tormented too much by Lynde, that Curse will be put into your graveyard and cause Lynde's first triggered ability to trigger.

Lynde's last ability doesn't target, so you can use it to attach a Curse to a player who has hexproof.