Here's a fun thing. Darkmoon covenant invaders get a Souvenir of Reprisal when they kill the host. This "souvenir" is their severed ear. Upon joining the covenant, you receive a ring that, if worn, allows you to be summoned to the world of a player who's entered Dark Sun Anor Londo. More than two can be summoned to a single world, yet they are all rewarded with a Souvenir of Reprisal if they're alive when the host is killed. ????