Requires

Etali, Primal Conqueror // Etali, Primal Sickness must be on the battlefield. Hua Tuo, Honored Physician must be on the battlefield. Thornbite Staff must be on the battlefield. Heat Shimmer must be in hand. Hua Tuo does not have summoning sickness. Thornbite Staff attached to Hua Tuo.Primal Conquerer. It is your precombat main phase. Mana needed:

Steps

1. Cast Heat Shimmer by paying , creating a token copy of Etali with haste.
2. Choose to put the nontoken Etali into your graveyard due to the legend rule.
3. If Etali is your commander, choose not to return it to the command zone from your graveyard.
4. The Etali token and Hua Tuo trigger.
5. Resolve the Hua Tuo trigger untapping it.
6. Activate Hua Tuo by tapping it, putting Etali on top of your library from your graveyard.
7. Resolve the Etali token's trigger from step 4, causing you to exile cards from each player's library until you exile a nonland card, with you exiling Etali from your library, and cast Etali and any other nonland cards exiled this way without paying their mana costs.
8. Choose to put the nontoken Etali into your graveyard due to the legend rule.
9. If Etali is your commander, choose not to return it to the command zone from your graveyard.
10. The nontoken Etali and Hua Tuo trigger.
11. Resolve the Hua Tuo trigger untapping it.
12. Activate Hua Tuo by tapping it, putting Etali on top of your library from your graveyard.
13. Resolve the nontoken Etali's trigger from step 10, causing you to exile cards from each player's library until you exile a nonland card, with you exiling Etali from your library, and cast Etali and any other nonland cards exiled this way without paying their mana costs.
14. Repeat from step 8.

Results