Java Edition:Permanently Powered Lightning Rod
A lightning rod is a block that creates a temporary Redstone signal when hit by lightning. However, in versions 20w45a to 21w18a, it was possible to obtain a lighting rod that is permanently powered.
Obtaining
Piston Push
From snapshot 20w45 to snapshot 21w19a, you must move a lightning rod with a piston while it is being struck by lightning. This will cause that lightning rod will be permanently powered.[1] The lightning rod will keep its powered: true block state even when updated or moved by piston.
Update Suppression
If lightning rod gets struck by lightning while it's next to an update suppressor, the lightning rod will stay powered permanently. That also causes the game to crash right after the lightning rod gets powered.
Usage
Lightning rod emits Redstone signal strength of 15 while being powered.