Respawn Anchor

A mobile respawn point in the nether, which I think could work if it tried to make the respawn points whichever of the 1, 2, 4, or even 8 blocks the Minecart was closest to, then going to the next closest, and so on. In other dimensions, it’s a high power explosive that can be moved around easily and must be manually detonated. If it gets blown up, the respawn anchor and glow stone drop, but the Minecart breaks