Sunforger + Final Fortune + Angel's Grace + Transplant Theorist

Sunforger

Final Fortune

Angel's Grace

Transplant Theorist

How it works

1. Activate Sunforger by paying and unattaching it, searching your library for Final Fortune and casting it without paying its mana cost.
2. Resolve Final Fortune, causing you to take an extra turn after this one.
3. Activate Transplant Theorist by paying 2, putting Final Fortune on the bottom of your library from your graveyard.
4. Move to your next turn.
5. Activate Sunforger's equip ability by paying 3, attaching it to a creature you control.
6. Repeat steps 1 through 3 one additional time.
7. Activate Sunforger's equip ability by paying 3, attaching it to a creature you control.
8. Activate Sunforger by paying and unattaching it, searching your library for Angel's Grace and casting it without paying its mana cost.
9. Resolve Angel's Grace, preventing you from losing the game this turn.
10. Activate Transplant Theorist by paying 2, putting Angel's Grace on the bottom of your library from your graveyard.
11. At the beginning of your end step, Final Fortune triggers, however you cannot lose the game due to Angel's Grace.
12. Repeat from step 4.