During the end step before your turn, cast Barren Glory by paying ({4} magic symbol) ({W} magic symbol) ({W} magic symbol) .
Holding priority, cast Apocalypse by paying ({2} magic symbol) ({R} magic symbol) ({R} magic symbol) ({R} magic symbol) , exiling all permanents and causing you to discard your hand.
Resolve Barren Glory.
At the beginning of your upkeep, Barren Glory triggers, causing you to win the game.