Sunforger + Final Fortune + Angel's Grace + Mistveil Plains + Sword of Feast and Famine

Prerequisites

• You control at least two white permanents.
• Sunforger attached to a creature you control.
• Sword of Feast and Famine attached to any creature you control that does not have summoning sickness and that cannot be blocked by an opponent.

Steps

1. 1Activate Sunforger by paying and unattaching it, searching your library for Final Fortune and casting it without paying its mana cost.
2. 2Resolve Final Fortune, causing you to take an extra turn after this one and lose the game at the beginning of that turn's end step.
3. 3Activate Mistveil Plains by paying and tapping it, putting Final Fortune on the bottom of your library from your graveyard.
4. 4Activate Sunforger's equip ability by paying , attaching it to any creature you control.
5. 5Move to your next turn.
6. 6Activate Sunforger by paying and unattaching it, searching your library for Angel's Grace and casting it without paying its mana cost.
7. 7Resolve Angel's Grace, causing you to be unable to lose the game this turn.
8. 8Activate Mistveil Plains by paying and tapping it, putting Angel's Grace on the bottom of your library from your graveyard.
9. 9Deal combat damage to an opponent using the creature that has Sword of Feast and Famine attached.
10. 10Sword of Feast and Famine triggers, causing the defending player to discard a card and you to untap all lands you control.
11. 11Activate Sunforger's equip ability by paying , attaching it to any creature you control.
12. 12Repeat.

Effects

• Infinite turns
• Lock