Spellbinder, Final Fortune, and Sundial of the Infinite

Prerequisites

• Spellbinder on the battlefield
• Final Fortune in exile
• Sundial of the Infinite on the battlefield
• Spellbinder attached to a creature that can attack this turn and that cannot be blocked by an opponent
• EACH EXTRA TURN available

Steps

1. Deal combat damage to a player with the equipped creature
2. Spellbinder's second ability triggers, allowing you to cast a copy of Final Fortune without paying its mana cost
3. The Final Fortune copy resolves, causing you to take an extra turn after this one and creating a delayed triggered ability that will cause you to lose the game at the end of that turn
4. Repeat steps 1 to 3 on your next extra turn
5. At the beginning of your end step, a delayed triggered ability from Final Fortune triggers
6. In response, activate Sundial of the Infinite by paying and tapping it, exiling that ability and ending the turn
7. Repeat from step 4 each turn

Results

• Infinite turns