Cast Final Fortune for ({R} magic symbol) ({R} magic symbol) .
Move to your extra turn.
activate Feldon for ({2} magic symbol) ({R} magic symbol) Tap creating a token copy of Archaeomancer.
With Archaeomancer's etb, put Final Fortune back into your hand.
Cast Final Fortune for ({R} magic symbol) ({R} magic symbol) .
Move to your end step, then activate Sundial of the Infinite to end your turn with Archaeomancer's sacrifice trigger and Final Fortune's lose the game trigger on the stack.