FHiddenMine
It's the best plugin to hide ores and make x-ray modscript invalid.
This plugin check and hide ores that under the Y position you set when Nukkit sending a chunk to players without permission FHiddenMine.show.(default:64)
Commands
/hidemine - Display help message
/hidemine add - Add a world to protect list
/hidemine remove - Remove a world from protect list
/hidemine list - Display the worlds in protect list
/hidemine reload - Reload config.yml