Before Miliastra, People used to always showcase their teams on Regisvines, Raiden, and Shouki no Kami, they do all that just to test out their damage and nukes.

But ever since this Classic Mode update dropped, some mad lad managed to make a Test Dummy stage that saves every mob and weekly boss of Genshin.

Everyone now focuses on playing this very stage.

Whoever made this has saved the lives of Raiden, The Balladeer, and the poor poor Regisvines.
This very stage has single-handedly saved all the enemies of Teyvat.