kingmaking

noun2

1. •
   The ceremony of crowning a king, or any similar ceremony of endowing a person with high office.
2. •
   In games, a strategy or design where one player (often the losing one) essentially gets to pick who wins.

   • I think that V:TES is a multiplayer game, and multiplayer games have the kingmaking problem no matter much you try to tweak the rules. — 2008