Prerequisites
- Tawnos, Urza's Apprentice on the battlefield
- Isochron Scepter in hand
- Tale's End in hand
- Final Fortune in hand
on your first turn, with 
available on each extra turn available
Steps
- Cast Isochron Scepter by paying
- Isochron Scepter enters the battlefield, triggering its imprint ability
- Holding priority, activate Tawnos by paying and tapping it, copying Isochron Scepter's trigger
- Resolve both Isochron Scepter triggers, exiling Tale's End and Final Fortune from your hand
- Activate Isochron Scepter by paying and tapping it, casting a copy of Final Fortune without paying its mana cost
- Resolve Final Fortune, causing you to take an extra turn after this one
- Move to your next turn
- At the beginning of the end step during your extra turn, Final Fortune triggers
- Holding prioirty, activate Isochron Scepter by paying and tapping it, casting a copy of Tale's End and Final Fortune without paying their mana cost
- Resolve Tale's End, countering Final Fortune's trigger from step 8
- Repeat from step 6
Results
Required Cards 4
Tawnos, Urza's Apprentice
Legendary Creature — Human Artificer
