During the end step of the opponent to your right, cast
Kaervek's Spite by paying ({B} magic symbol) ({B} magic symbol) ({B} magic symbol) , sacrificing all permanents you control, and discarding your hand, causing any target player to lose 5 life.
Oblivion Ring leaves the battlefield, triggering its own ability, returning
Barren Glory to the battlefield.
At the beginning of your upkeep,
Barren Glory triggers, causing you to win the game.