I've wondered about this since I was brewing an Araumi of the Dead Tide list. When I go to encore Massacre Wurm out of my graveyard and give trigger its second ability enough times to eliminate one of my opponents, can I then go to combat and attack with 2 Massacre Wurm's at one of my remaining opponents? Or can I only send one Massacre Wurm to each of my remaining opponents? I haven't looked too deeply into the nitty gritty of the encore mechanic but I would assume that I wouldn't be able to attack with 2 encored creatures at one opponent if one of my opponents died.

I'm asking this since this interaction came into my head, but in a game of commander, if Player A kills Player B who controls Player A's Wishclaw Talisman, does it return under Player A's control or does it go into exile when that Player B dies? I also assume it works the same way if Player C kills Player B in this scenario where it would return to Player A. I've looked generally at what happens to stolen permanents but I want to ensure I understand what happens in this interaction.