Zethi, Arcane Blademaster | Final Fortune | Angel's Grace

Cards

Declare
Zethi as an attacker.
Zethi triggers, copying all cards you own in exile with kick counters on them and allowing you to cast the copies.
Cast the
Final Fortune and
Angel's Grace copies by paying ({W} magic symbol) ({R} magic symbol) ({R} magic symbol) .
Resolve the
Final Fortune copy, causing you to take an extra turn after this one and lose the game at the end of the extra turn.
Resolve the
Angel's Grace copy, preventing you from losing the game this turn.
At the beginning of each extra turn's end step,
Final Fortune triggers, however you cannot lose the game due to
Angel's Grace.
Repeat each turn.