I am looking for a plugin for my factions server that would let me place cauldrons and brewing stands at Y level 256 if there is a plugin that can do this please help me out. Or even in a .yml file.
As the value in server.properties already is on 256 by default (max-build-height=256). I'd recommend you to go on height 255 and use the /up 1 command (implemented in WorldEdit) and then you can use this block among you to place as many cauldrons as you want.. Just simply do //pos1 and //pos2 at this block and then expand the area via //expand [blocks] [direction]. Now just set the cauldrons via command.