Final Fortune in exile (exiled by Isochron Scepter).
Lich's Mastery and Isochron Scepter on the battlefield.
({2} magic symbol) each turn available.
Steps
Activate Isochron Scepter by paying ({2} magic symbol) , casting a copy of Final Fortune without paying its mana cost.
Resolve Final Fortune, taking an extra turn after this one.
Repeat each turn.
At the beginning of each extra turn's end step, Final Fortune triggers to cause you to lose the game, but you cannot lose the game due to Lich's Mastery.