A working mirror was built in Minecraft — snapshot 25w36b expanded game mechanics
Players have an additional tool for experimentation.
Recently, Mojang released snapshot 25w36b for Minecraft. Thanks to one innovation, players have another option for creativity.
The developers introduced "Dummies" — they are described as "technical entities that are spawned by commands and can be used as NPCs."
A Minecraft player with the nickname PALKIP tested the snapshot and shared the results of his creative experiment with the game community: he created a working "mirror."
In this case, the Dummy plays the role of the player character's "reflection" — repeating his movements.
Due to this technical feature of the "mirror" implementation, you can notice that there is still a slight delay in the movement of the "reflection."